Home / 21,204.38-29,260.56-11,772.20

Finding the Fourth Proportional to 21,204.38, 29,260.56 and 11,772.20

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Solution

The fourth proportional to 21,204.38, 29,260.56 and 11,772.20 is: 16,244.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.38 : 29,260.56 = 11,772.20 : x
  2. Step 2: Convert to fraction form
    21,204.38/29,260.56 = 11,772.20/x
  3. Step 3: Cross multiply
    21,204.38x = 29,260.56 × 11,772.20
  4. Step 4: Simplify right side
    21,204.38x = 344,461,018.13
  5. Step 5: Solve for x
    x = 344,461,018.13/21,204.38
  6. Step 6: Final answer
    x = 16,244.81

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Half scale
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Double scale
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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.