Home / 20,760.28-31,251.22-18,617

Finding the Fourth Proportional to 20,760.28, 31,251.22 and 18,617

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Solution

The fourth proportional to 20,760.28, 31,251.22 and 18,617 is: 28,024.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.28 : 31,251.22 = 18,617 : x
  2. Step 2: Convert to fraction form
    20,760.28/31,251.22 = 18,617/x
  3. Step 3: Cross multiply
    20,760.28x = 31,251.22 × 18,617
  4. Step 4: Simplify right side
    20,760.28x = 581,803,962.74
  5. Step 5: Solve for x
    x = 581,803,962.74/20,760.28
  6. Step 6: Final answer
    x = 28,024.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.