Home / 11,376.52-17,079.60-9,991.40

Finding the Fourth Proportional to 11,376.52, 17,079.60 and 9,991.40

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Solution

The fourth proportional to 11,376.52, 17,079.60 and 9,991.40 is: 15,000.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,376.52 : 17,079.60 = 9,991.40 : x
  2. Step 2: Convert to fraction form
    11,376.52/17,079.60 = 9,991.40/x
  3. Step 3: Cross multiply
    11,376.52x = 17,079.60 × 9,991.40
  4. Step 4: Simplify right side
    11,376.52x = 170,649,115.44
  5. Step 5: Solve for x
    x = 170,649,115.44/11,376.52
  6. Step 6: Final answer
    x = 15,000.12

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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.