Home / 19,990.60-29,921.10-15,584.20

Finding the Fourth Proportional to 19,990.60, 29,921.10 and 15,584.20

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Solution

The fourth proportional to 19,990.60, 29,921.10 and 15,584.20 is: 23,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.60 : 29,921.10 = 15,584.20 : x
  2. Step 2: Convert to fraction form
    19,990.60/29,921.10 = 15,584.20/x
  3. Step 3: Cross multiply
    19,990.60x = 29,921.10 × 15,584.20
  4. Step 4: Simplify right side
    19,990.60x = 466,296,406.62
  5. Step 5: Solve for x
    x = 466,296,406.62/19,990.60
  6. Step 6: Final answer
    x = 23,325.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.