Home / 23,153.12-31,951.28-12,542.80

Finding the Fourth Proportional to 23,153.12, 31,951.28 and 12,542.80

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Solution

The fourth proportional to 23,153.12, 31,951.28 and 12,542.80 is: 17,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,153.12 : 31,951.28 = 12,542.80 : x
  2. Step 2: Convert to fraction form
    23,153.12/31,951.28 = 12,542.80/x
  3. Step 3: Cross multiply
    23,153.12x = 31,951.28 × 12,542.80
  4. Step 4: Simplify right side
    23,153.12x = 400,758,514.78
  5. Step 5: Solve for x
    x = 400,758,514.78/23,153.12
  6. Step 6: Final answer
    x = 17,309.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.