Home / 11,081.43-15,290.15-7,049.86

Finding the Fourth Proportional to 11,081.43, 15,290.15 and 7,049.86

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Solution

The fourth proportional to 11,081.43, 15,290.15 and 7,049.86 is: 9,727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,081.43 : 15,290.15 = 7,049.86 : x
  2. Step 2: Convert to fraction form
    11,081.43/15,290.15 = 7,049.86/x
  3. Step 3: Cross multiply
    11,081.43x = 15,290.15 × 7,049.86
  4. Step 4: Simplify right side
    11,081.43x = 107,793,343.40
  5. Step 5: Solve for x
    x = 107,793,343.40/11,081.43
  6. Step 6: Final answer
    x = 9,727.39

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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.