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Finding the Fourth Proportional to 28,654.28, 42,981.98 and 9,934.92

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Solution

The fourth proportional to 28,654.28, 42,981.98 and 9,934.92 is: 14,902.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.28 : 42,981.98 = 9,934.92 : x
  2. Step 2: Convert to fraction form
    28,654.28/42,981.98 = 9,934.92/x
  3. Step 3: Cross multiply
    28,654.28x = 42,981.98 × 9,934.92
  4. Step 4: Simplify right side
    28,654.28x = 427,022,532.74
  5. Step 5: Solve for x
    x = 427,022,532.74/28,654.28
  6. Step 6: Final answer
    x = 14,902.57

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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.