Home / 17,138.88-25,711.20-5,455.68

Finding the Fourth Proportional to 17,138.88, 25,711.20 and 5,455.68

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Solution

The fourth proportional to 17,138.88, 25,711.20 and 5,455.68 is: 8,184.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,138.88 : 25,711.20 = 5,455.68 : x
  2. Step 2: Convert to fraction form
    17,138.88/25,711.20 = 5,455.68/x
  3. Step 3: Cross multiply
    17,138.88x = 25,711.20 × 5,455.68
  4. Step 4: Simplify right side
    17,138.88x = 140,272,079.62
  5. Step 5: Solve for x
    x = 140,272,079.62/17,138.88
  6. Step 6: Final answer
    x = 8,184.44

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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.