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Finding the Fourth Proportional to 29,082.78, 40,129.29 and 17,141.76

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Solution

The fourth proportional to 29,082.78, 40,129.29 and 17,141.76 is: 23,652.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,082.78 : 40,129.29 = 17,141.76 : x
  2. Step 2: Convert to fraction form
    29,082.78/40,129.29 = 17,141.76/x
  3. Step 3: Cross multiply
    29,082.78x = 40,129.29 × 17,141.76
  4. Step 4: Simplify right side
    29,082.78x = 687,886,658.15
  5. Step 5: Solve for x
    x = 687,886,658.15/29,082.78
  6. Step 6: Final answer
    x = 23,652.71

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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.