Home / 11,251.62-15,531.78-6,779.20

Finding the Fourth Proportional to 11,251.62, 15,531.78 and 6,779.20

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Solution

The fourth proportional to 11,251.62, 15,531.78 and 6,779.20 is: 9,358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,251.62 : 15,531.78 = 6,779.20 : x
  2. Step 2: Convert to fraction form
    11,251.62/15,531.78 = 6,779.20/x
  3. Step 3: Cross multiply
    11,251.62x = 15,531.78 × 6,779.20
  4. Step 4: Simplify right side
    11,251.62x = 105,293,042.98
  5. Step 5: Solve for x
    x = 105,293,042.98/11,251.62
  6. Step 6: Final answer
    x = 9,358.03

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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.