Home / 31,141.44-42,976.10-16,995.20

Finding the Fourth Proportional to 31,141.44, 42,976.10 and 16,995.20

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Solution

The fourth proportional to 31,141.44, 42,976.10 and 16,995.20 is: 23,453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,141.44 : 42,976.10 = 16,995.20 : x
  2. Step 2: Convert to fraction form
    31,141.44/42,976.10 = 16,995.20/x
  3. Step 3: Cross multiply
    31,141.44x = 42,976.10 × 16,995.20
  4. Step 4: Simplify right side
    31,141.44x = 730,387,414.72
  5. Step 5: Solve for x
    x = 730,387,414.72/31,141.44
  6. Step 6: Final answer
    x = 23,453.87

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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.