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Finding the Fourth Proportional to 12,761.29, 17,610.63 and 7,454.98

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Solution

The fourth proportional to 12,761.29, 17,610.63 and 7,454.98 is: 10,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.29 : 17,610.63 = 7,454.98 : x
  2. Step 2: Convert to fraction form
    12,761.29/17,610.63 = 7,454.98/x
  3. Step 3: Cross multiply
    12,761.29x = 17,610.63 × 7,454.98
  4. Step 4: Simplify right side
    12,761.29x = 131,286,806.38
  5. Step 5: Solve for x
    x = 131,286,806.38/12,761.29
  6. Step 6: Final answer
    x = 10,287.90

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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.