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Finding the Fourth Proportional to 12,726.11, 17,566.07 and 7,421.93

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Solution

The fourth proportional to 12,726.11, 17,566.07 and 7,421.93 is: 10,244.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.11 : 17,566.07 = 7,421.93 : x
  2. Step 2: Convert to fraction form
    12,726.11/17,566.07 = 7,421.93/x
  3. Step 3: Cross multiply
    12,726.11x = 17,566.07 × 7,421.93
  4. Step 4: Simplify right side
    12,726.11x = 130,374,082.85
  5. Step 5: Solve for x
    x = 130,374,082.85/12,726.11
  6. Step 6: Final answer
    x = 10,244.61

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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.