Home / 20,621.38-30,947.62-15,089

Finding the Fourth Proportional to 20,621.38, 30,947.62 and 15,089

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Solution

The fourth proportional to 20,621.38, 30,947.62 and 15,089 is: 22,644.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.38 : 30,947.62 = 15,089 : x
  2. Step 2: Convert to fraction form
    20,621.38/30,947.62 = 15,089/x
  3. Step 3: Cross multiply
    20,621.38x = 30,947.62 × 15,089
  4. Step 4: Simplify right side
    20,621.38x = 466,968,638.18
  5. Step 5: Solve for x
    x = 466,968,638.18/20,621.38
  6. Step 6: Final answer
    x = 22,644.88

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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.