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Finding the Fourth Proportional to 28,064.46, 42,064.87 and 9,340.10

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Solution

The fourth proportional to 28,064.46, 42,064.87 and 9,340.10 is: 13,999.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.46 : 42,064.87 = 9,340.10 : x
  2. Step 2: Convert to fraction form
    28,064.46/42,064.87 = 9,340.10/x
  3. Step 3: Cross multiply
    28,064.46x = 42,064.87 × 9,340.10
  4. Step 4: Simplify right side
    28,064.46x = 392,890,092.29
  5. Step 5: Solve for x
    x = 392,890,092.29/28,064.46
  6. Step 6: Final answer
    x = 13,999.56

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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.