Home / 12,543.52-17,310.25-6,878.78

Finding the Fourth Proportional to 12,543.52, 17,310.25 and 6,878.78

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Solution

The fourth proportional to 12,543.52, 17,310.25 and 6,878.78 is: 9,492.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.52 : 17,310.25 = 6,878.78 : x
  2. Step 2: Convert to fraction form
    12,543.52/17,310.25 = 6,878.78/x
  3. Step 3: Cross multiply
    12,543.52x = 17,310.25 × 6,878.78
  4. Step 4: Simplify right side
    12,543.52x = 119,073,427.57
  5. Step 5: Solve for x
    x = 119,073,427.57/12,543.52
  6. Step 6: Final answer
    x = 9,492.83

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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.