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Finding the Fourth Proportional to 29,419.49, 40,599.16 and 15,990.77

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Solution

The fourth proportional to 29,419.49, 40,599.16 and 15,990.77 is: 22,067.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,419.49 : 40,599.16 = 15,990.77 : x
  2. Step 2: Convert to fraction form
    29,419.49/40,599.16 = 15,990.77/x
  3. Step 3: Cross multiply
    29,419.49x = 40,599.16 × 15,990.77
  4. Step 4: Simplify right side
    29,419.49x = 649,211,829.75
  5. Step 5: Solve for x
    x = 649,211,829.75/29,419.49
  6. Step 6: Final answer
    x = 22,067.41

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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.