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Finding the Fourth Proportional to 18,704, 28,060.08 and 5,557.28

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Solution

The fourth proportional to 18,704, 28,060.08 and 5,557.28 is: 8,337.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704 : 28,060.08 = 5,557.28 : x
  2. Step 2: Convert to fraction form
    18,704/28,060.08 = 5,557.28/x
  3. Step 3: Cross multiply
    18,704x = 28,060.08 × 5,557.28
  4. Step 4: Simplify right side
    18,704x = 155,937,721.38
  5. Step 5: Solve for x
    x = 155,937,721.38/18,704
  6. Step 6: Final answer
    x = 8,337.13

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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.