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Finding the Fourth Proportional to 29,291.17, 40,421.84 and 15,862.44

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Solution

The fourth proportional to 29,291.17, 40,421.84 and 15,862.44 is: 21,890.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,291.17 : 40,421.84 = 15,862.44 : x
  2. Step 2: Convert to fraction form
    29,291.17/40,421.84 = 15,862.44/x
  3. Step 3: Cross multiply
    29,291.17x = 40,421.84 × 15,862.44
  4. Step 4: Simplify right side
    29,291.17x = 641,189,051.35
  5. Step 5: Solve for x
    x = 641,189,051.35/29,291.17
  6. Step 6: Final answer
    x = 21,890.18

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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.