Home / 20,956.14-31,414.68-14,385.42

Finding the Fourth Proportional to 20,956.14, 31,414.68 and 14,385.42

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Solution

The fourth proportional to 20,956.14, 31,414.68 and 14,385.42 is: 21,564.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.14 : 31,414.68 = 14,385.42 : x
  2. Step 2: Convert to fraction form
    20,956.14/31,414.68 = 14,385.42/x
  3. Step 3: Cross multiply
    20,956.14x = 31,414.68 × 14,385.42
  4. Step 4: Simplify right side
    20,956.14x = 451,913,365.97
  5. Step 5: Solve for x
    x = 451,913,365.97/20,956.14
  6. Step 6: Final answer
    x = 21,564.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.