Home / 15,461.19-21,336.44-8,387.55

Finding the Fourth Proportional to 15,461.19, 21,336.44 and 8,387.55

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Solution

The fourth proportional to 15,461.19, 21,336.44 and 8,387.55 is: 11,574.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.19 : 21,336.44 = 8,387.55 : x
  2. Step 2: Convert to fraction form
    15,461.19/21,336.44 = 8,387.55/x
  3. Step 3: Cross multiply
    15,461.19x = 21,336.44 × 8,387.55
  4. Step 4: Simplify right side
    15,461.19x = 178,960,415.38
  5. Step 5: Solve for x
    x = 178,960,415.38/15,461.19
  6. Step 6: Final answer
    x = 11,574.82

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Half scale
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Double scale
Find fourth proportional to 15,462.19, 21,337.81 and 8,388.55
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.