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Finding the Fourth Proportional to 12,402.88, 17,082.72 and 11,468.64

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Solution

The fourth proportional to 12,402.88, 17,082.72 and 11,468.64 is: 15,795.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.88 : 17,082.72 = 11,468.64 : x
  2. Step 2: Convert to fraction form
    12,402.88/17,082.72 = 11,468.64/x
  3. Step 3: Cross multiply
    12,402.88x = 17,082.72 × 11,468.64
  4. Step 4: Simplify right side
    12,402.88x = 195,915,565.90
  5. Step 5: Solve for x
    x = 195,915,565.90/12,402.88
  6. Step 6: Final answer
    x = 15,795.97

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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.