Home / 15,951.88-22,013.61-8,878.78

Finding the Fourth Proportional to 15,951.88, 22,013.61 and 8,878.78

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Solution

The fourth proportional to 15,951.88, 22,013.61 and 8,878.78 is: 12,252.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951.88 : 22,013.61 = 8,878.78 : x
  2. Step 2: Convert to fraction form
    15,951.88/22,013.61 = 8,878.78/x
  3. Step 3: Cross multiply
    15,951.88x = 22,013.61 × 8,878.78
  4. Step 4: Simplify right side
    15,951.88x = 195,453,890.13
  5. Step 5: Solve for x
    x = 195,453,890.13/15,951.88
  6. Step 6: Final answer
    x = 12,252.72

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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.