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Finding the Fourth Proportional to 10,226, 15,338.88 and 5,305.28

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Solution

The fourth proportional to 10,226, 15,338.88 and 5,305.28 is: 7,957.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,226 : 15,338.88 = 5,305.28 : x
  2. Step 2: Convert to fraction form
    10,226/15,338.88 = 5,305.28/x
  3. Step 3: Cross multiply
    10,226x = 15,338.88 × 5,305.28
  4. Step 4: Simplify right side
    10,226x = 81,377,053.29
  5. Step 5: Solve for x
    x = 81,377,053.29/10,226
  6. Step 6: Final answer
    x = 7,957.86

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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.