Home / 20,414.92-28,172.35-11,462.20

Finding the Fourth Proportional to 20,414.92, 28,172.35 and 11,462.20

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Solution

The fourth proportional to 20,414.92, 28,172.35 and 11,462.20 is: 15,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.92 : 28,172.35 = 11,462.20 : x
  2. Step 2: Convert to fraction form
    20,414.92/28,172.35 = 11,462.20/x
  3. Step 3: Cross multiply
    20,414.92x = 28,172.35 × 11,462.20
  4. Step 4: Simplify right side
    20,414.92x = 322,917,110.17
  5. Step 5: Solve for x
    x = 322,917,110.17/20,414.92
  6. Step 6: Final answer
    x = 15,817.70

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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.