Home / 10,249.52-15,387.24-8,720.24

Finding the Fourth Proportional to 10,249.52, 15,387.24 and 8,720.24

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Solution

The fourth proportional to 10,249.52, 15,387.24 and 8,720.24 is: 13,091.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,249.52 : 15,387.24 = 8,720.24 : x
  2. Step 2: Convert to fraction form
    10,249.52/15,387.24 = 8,720.24/x
  3. Step 3: Cross multiply
    10,249.52x = 15,387.24 × 8,720.24
  4. Step 4: Simplify right side
    10,249.52x = 134,180,425.74
  5. Step 5: Solve for x
    x = 134,180,425.74/10,249.52
  6. Step 6: Final answer
    x = 13,091.39

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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.