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Finding the Fourth Proportional to 21,073.84, 29,082.24 and 11,642.92

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Solution

The fourth proportional to 21,073.84, 29,082.24 and 11,642.92 is: 16,067.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.84 : 29,082.24 = 11,642.92 : x
  2. Step 2: Convert to fraction form
    21,073.84/29,082.24 = 11,642.92/x
  3. Step 3: Cross multiply
    21,073.84x = 29,082.24 × 11,642.92
  4. Step 4: Simplify right side
    21,073.84x = 338,602,193.74
  5. Step 5: Solve for x
    x = 338,602,193.74/21,073.84
  6. Step 6: Final answer
    x = 16,067.42

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Double scale
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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.