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Finding the Fourth Proportional to 29,291.77, 40,422.43 and 15,862.72

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Solution

The fourth proportional to 29,291.77, 40,422.43 and 15,862.72 is: 21,890.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,291.77 : 40,422.43 = 15,862.72 : x
  2. Step 2: Convert to fraction form
    29,291.77/40,422.43 = 15,862.72/x
  3. Step 3: Cross multiply
    29,291.77x = 40,422.43 × 15,862.72
  4. Step 4: Simplify right side
    29,291.77x = 641,209,486.70
  5. Step 5: Solve for x
    x = 641,209,486.70/29,291.77
  6. Step 6: Final answer
    x = 21,890.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.