Home / 13,387.13-20,080.70-4,153.13

Finding the Fourth Proportional to 13,387.13, 20,080.70 and 4,153.13

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Solution

The fourth proportional to 13,387.13, 20,080.70 and 4,153.13 is: 6,229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.13 : 20,080.70 = 4,153.13 : x
  2. Step 2: Convert to fraction form
    13,387.13/20,080.70 = 4,153.13/x
  3. Step 3: Cross multiply
    13,387.13x = 20,080.70 × 4,153.13
  4. Step 4: Simplify right side
    13,387.13x = 83,397,757.59
  5. Step 5: Solve for x
    x = 83,397,757.59/13,387.13
  6. Step 6: Final answer
    x = 6,229.70

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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.