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Finding the Fourth Proportional to 11,458, 15,812.04 and 6,490.96

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Solution

The fourth proportional to 11,458, 15,812.04 and 6,490.96 is: 8,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,458 : 15,812.04 = 6,490.96 : x
  2. Step 2: Convert to fraction form
    11,458/15,812.04 = 6,490.96/x
  3. Step 3: Cross multiply
    11,458x = 15,812.04 × 6,490.96
  4. Step 4: Simplify right side
    11,458x = 102,635,319.16
  5. Step 5: Solve for x
    x = 102,635,319.16/11,458
  6. Step 6: Final answer
    x = 8,957.52

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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.