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Finding the Fourth Proportional to 29,419.65, 40,599.01 and 15,990.93

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Solution

The fourth proportional to 29,419.65, 40,599.01 and 15,990.93 is: 22,067.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,419.65 : 40,599.01 = 15,990.93 : x
  2. Step 2: Convert to fraction form
    29,419.65/40,599.01 = 15,990.93/x
  3. Step 3: Cross multiply
    29,419.65x = 40,599.01 × 15,990.93
  4. Step 4: Simplify right side
    29,419.65x = 649,215,926.98
  5. Step 5: Solve for x
    x = 649,215,926.98/29,419.65
  6. Step 6: Final answer
    x = 22,067.43

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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.