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Finding the Fourth Proportional to 11,425.64, 15,773.13 and 10,815.17

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Solution

The fourth proportional to 11,425.64, 15,773.13 and 10,815.17 is: 14,930.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.64 : 15,773.13 = 10,815.17 : x
  2. Step 2: Convert to fraction form
    11,425.64/15,773.13 = 10,815.17/x
  3. Step 3: Cross multiply
    11,425.64x = 15,773.13 × 10,815.17
  4. Step 4: Simplify right side
    11,425.64x = 170,589,003.52
  5. Step 5: Solve for x
    x = 170,589,003.52/11,425.64
  6. Step 6: Final answer
    x = 14,930.37

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1.5x scale

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.