Home / 13,517.80-20,262.90-9,135.70

Finding the Fourth Proportional to 13,517.80, 20,262.90 and 9,135.70

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Solution

The fourth proportional to 13,517.80, 20,262.90 and 9,135.70 is: 13,694.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.80 : 20,262.90 = 9,135.70 : x
  2. Step 2: Convert to fraction form
    13,517.80/20,262.90 = 9,135.70/x
  3. Step 3: Cross multiply
    13,517.80x = 20,262.90 × 9,135.70
  4. Step 4: Simplify right side
    13,517.80x = 185,115,775.53
  5. Step 5: Solve for x
    x = 185,115,775.53/13,517.80
  6. Step 6: Final answer
    x = 13,694.22

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1.5x scale

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.