Home / 31,514.88-47,272.32-18,367.20

Finding the Fourth Proportional to 31,514.88, 47,272.32 and 18,367.20

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Solution

The fourth proportional to 31,514.88, 47,272.32 and 18,367.20 is: 27,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,514.88 : 47,272.32 = 18,367.20 : x
  2. Step 2: Convert to fraction form
    31,514.88/47,272.32 = 18,367.20/x
  3. Step 3: Cross multiply
    31,514.88x = 47,272.32 × 18,367.20
  4. Step 4: Simplify right side
    31,514.88x = 868,260,155.90
  5. Step 5: Solve for x
    x = 868,260,155.90/31,514.88
  6. Step 6: Final answer
    x = 27,550.80

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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.