Home / 22,293.60-30,761.28-12,729.12

Finding the Fourth Proportional to 22,293.60, 30,761.28 and 12,729.12

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Solution

The fourth proportional to 22,293.60, 30,761.28 and 12,729.12 is: 17,563.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,293.60 : 30,761.28 = 12,729.12 : x
  2. Step 2: Convert to fraction form
    22,293.60/30,761.28 = 12,729.12/x
  3. Step 3: Cross multiply
    22,293.60x = 30,761.28 × 12,729.12
  4. Step 4: Simplify right side
    22,293.60x = 391,564,024.47
  5. Step 5: Solve for x
    x = 391,564,024.47/22,293.60
  6. Step 6: Final answer
    x = 17,563.97

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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.