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Finding the Fourth Proportional to 29,419.80, 40,599.59 and 15,991.08

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Solution

The fourth proportional to 29,419.80, 40,599.59 and 15,991.08 is: 22,067.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,419.80 : 40,599.59 = 15,991.08 : x
  2. Step 2: Convert to fraction form
    29,419.80/40,599.59 = 15,991.08/x
  3. Step 3: Cross multiply
    29,419.80x = 40,599.59 × 15,991.08
  4. Step 4: Simplify right side
    29,419.80x = 649,231,377.78
  5. Step 5: Solve for x
    x = 649,231,377.78/29,419.80
  6. Step 6: Final answer
    x = 22,067.84

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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.