Home / 31,262.45-43,142.09-17,115.20

Finding the Fourth Proportional to 31,262.45, 43,142.09 and 17,115.20

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Solution

The fourth proportional to 31,262.45, 43,142.09 and 17,115.20 is: 23,618.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,262.45 : 43,142.09 = 17,115.20 : x
  2. Step 2: Convert to fraction form
    31,262.45/43,142.09 = 17,115.20/x
  3. Step 3: Cross multiply
    31,262.45x = 43,142.09 × 17,115.20
  4. Step 4: Simplify right side
    31,262.45x = 738,385,197.48
  5. Step 5: Solve for x
    x = 738,385,197.48/31,262.45
  6. Step 6: Final answer
    x = 23,618.92

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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.