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Finding the Fourth Proportional to 29,376.65, 40,539.80 and 15,947.91

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Solution

The fourth proportional to 29,376.65, 40,539.80 and 15,947.91 is: 22,008.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,376.65 : 40,539.80 = 15,947.91 : x
  2. Step 2: Convert to fraction form
    29,376.65/40,539.80 = 15,947.91/x
  3. Step 3: Cross multiply
    29,376.65x = 40,539.80 × 15,947.91
  4. Step 4: Simplify right side
    29,376.65x = 646,525,121.69
  5. Step 5: Solve for x
    x = 646,525,121.69/29,376.65
  6. Step 6: Final answer
    x = 22,008.13

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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.