Home / 20,757.18-28,645.02-11,325.95

Finding the Fourth Proportional to 20,757.18, 28,645.02 and 11,325.95

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Solution

The fourth proportional to 20,757.18, 28,645.02 and 11,325.95 is: 15,629.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.18 : 28,645.02 = 11,325.95 : x
  2. Step 2: Convert to fraction form
    20,757.18/28,645.02 = 11,325.95/x
  3. Step 3: Cross multiply
    20,757.18x = 28,645.02 × 11,325.95
  4. Step 4: Simplify right side
    20,757.18x = 324,431,921.04
  5. Step 5: Solve for x
    x = 324,431,921.04/20,757.18
  6. Step 6: Final answer
    x = 15,629.86

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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.