Home / 23,151.13-31,948.53-12,540.80

Finding the Fourth Proportional to 23,151.13, 31,948.53 and 12,540.80

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Solution

The fourth proportional to 23,151.13, 31,948.53 and 12,540.80 is: 17,306.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,151.13 : 31,948.53 = 12,540.80 : x
  2. Step 2: Convert to fraction form
    23,151.13/31,948.53 = 12,540.80/x
  3. Step 3: Cross multiply
    23,151.13x = 31,948.53 × 12,540.80
  4. Step 4: Simplify right side
    23,151.13x = 400,660,157.87
  5. Step 5: Solve for x
    x = 400,660,157.87/23,151.13
  6. Step 6: Final answer
    x = 17,306.29

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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.