Home / 11,891.70-17,837.55-7,974.90

Finding the Fourth Proportional to 11,891.70, 17,837.55 and 7,974.90

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Solution

The fourth proportional to 11,891.70, 17,837.55 and 7,974.90 is: 11,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.70 : 17,837.55 = 7,974.90 : x
  2. Step 2: Convert to fraction form
    11,891.70/17,837.55 = 7,974.90/x
  3. Step 3: Cross multiply
    11,891.70x = 17,837.55 × 7,974.90
  4. Step 4: Simplify right side
    11,891.70x = 142,252,677.50
  5. Step 5: Solve for x
    x = 142,252,677.50/11,891.70
  6. Step 6: Final answer
    x = 11,962.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.