Home / 15,939.34-21,995.97-8,865.61

Finding the Fourth Proportional to 15,939.34, 21,995.97 and 8,865.61

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Solution

The fourth proportional to 15,939.34, 21,995.97 and 8,865.61 is: 12,234.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.34 : 21,995.97 = 8,865.61 : x
  2. Step 2: Convert to fraction form
    15,939.34/21,995.97 = 8,865.61/x
  3. Step 3: Cross multiply
    15,939.34x = 21,995.97 × 8,865.61
  4. Step 4: Simplify right side
    15,939.34x = 195,007,691.59
  5. Step 5: Solve for x
    x = 195,007,691.59/15,939.34
  6. Step 6: Final answer
    x = 12,234.36

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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.