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Finding the Fourth Proportional to 29,419.65, 40,599.51 and 15,991.11

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Solution

The fourth proportional to 29,419.65, 40,599.51 and 15,991.11 is: 22,067.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,419.65 : 40,599.51 = 15,991.11 : x
  2. Step 2: Convert to fraction form
    29,419.65/40,599.51 = 15,991.11/x
  3. Step 3: Cross multiply
    29,419.65x = 40,599.51 × 15,991.11
  4. Step 4: Simplify right side
    29,419.65x = 649,231,230.36
  5. Step 5: Solve for x
    x = 649,231,230.36/29,419.65
  6. Step 6: Final answer
    x = 22,067.95

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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.