Home / 15,346.55-21,178.36-8,632.12

Finding the Fourth Proportional to 15,346.55, 21,178.36 and 8,632.12

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Solution

The fourth proportional to 15,346.55, 21,178.36 and 8,632.12 is: 11,912.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,346.55 : 21,178.36 = 8,632.12 : x
  2. Step 2: Convert to fraction form
    15,346.55/21,178.36 = 8,632.12/x
  3. Step 3: Cross multiply
    15,346.55x = 21,178.36 × 8,632.12
  4. Step 4: Simplify right side
    15,346.55x = 182,814,144.92
  5. Step 5: Solve for x
    x = 182,814,144.92/15,346.55
  6. Step 6: Final answer
    x = 11,912.39

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Half scale
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Double scale
Find fourth proportional to 15,347.55, 21,179.74 and 8,633.12
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.