Home / 10,520.28-15,780.02-2,622.78

Finding the Fourth Proportional to 10,520.28, 15,780.02 and 2,622.78

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Solution

The fourth proportional to 10,520.28, 15,780.02 and 2,622.78 is: 3,934.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.28 : 15,780.02 = 2,622.78 : x
  2. Step 2: Convert to fraction form
    10,520.28/15,780.02 = 2,622.78/x
  3. Step 3: Cross multiply
    10,520.28x = 15,780.02 × 2,622.78
  4. Step 4: Simplify right side
    10,520.28x = 41,387,507.74
  5. Step 5: Solve for x
    x = 41,387,507.74/10,520.28
  6. Step 6: Final answer
    x = 3,934.07

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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.