Home / 22,487.19-31,003.47-18,439.10

Finding the Fourth Proportional to 22,487.19, 31,003.47 and 18,439.10

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Solution

The fourth proportional to 22,487.19, 31,003.47 and 18,439.10 is: 25,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,487.19 : 31,003.47 = 18,439.10 : x
  2. Step 2: Convert to fraction form
    22,487.19/31,003.47 = 18,439.10/x
  3. Step 3: Cross multiply
    22,487.19x = 31,003.47 × 18,439.10
  4. Step 4: Simplify right side
    22,487.19x = 571,676,083.68
  5. Step 5: Solve for x
    x = 571,676,083.68/22,487.19
  6. Step 6: Final answer
    x = 25,422.30

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Half scale
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Double scale
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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.