Home / 15,383.10-21,228.76-8,668.83

Finding the Fourth Proportional to 15,383.10, 21,228.76 and 8,668.83

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Solution

The fourth proportional to 15,383.10, 21,228.76 and 8,668.83 is: 11,963.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.10 : 21,228.76 = 8,668.83 : x
  2. Step 2: Convert to fraction form
    15,383.10/21,228.76 = 8,668.83/x
  3. Step 3: Cross multiply
    15,383.10x = 21,228.76 × 8,668.83
  4. Step 4: Simplify right side
    15,383.10x = 184,028,511.55
  5. Step 5: Solve for x
    x = 184,028,511.55/15,383.10
  6. Step 6: Final answer
    x = 11,963.03

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Find fourth proportional to 7,691.55, 10,614.38 and 4,334.42
Half scale
Find fourth proportional to 30,766.20, 42,457.52 and 17,337.66
Double scale
Find fourth proportional to 15,384.10, 21,230.14 and 8,669.83
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.