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Finding the Fourth Proportional to 15,951.90, 22,013.40 and 8,878.32

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Solution

The fourth proportional to 15,951.90, 22,013.40 and 8,878.32 is: 12,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951.90 : 22,013.40 = 8,878.32 : x
  2. Step 2: Convert to fraction form
    15,951.90/22,013.40 = 8,878.32/x
  3. Step 3: Cross multiply
    15,951.90x = 22,013.40 × 8,878.32
  4. Step 4: Simplify right side
    15,951.90x = 195,442,009.49
  5. Step 5: Solve for x
    x = 195,442,009.49/15,951.90
  6. Step 6: Final answer
    x = 12,251.96

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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.