Home / 18,691.08-28,039.59-7,005.18

Finding the Fourth Proportional to 18,691.08, 28,039.59 and 7,005.18

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Solution

The fourth proportional to 18,691.08, 28,039.59 and 7,005.18 is: 10,508.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.08 : 28,039.59 = 7,005.18 : x
  2. Step 2: Convert to fraction form
    18,691.08/28,039.59 = 7,005.18/x
  3. Step 3: Cross multiply
    18,691.08x = 28,039.59 × 7,005.18
  4. Step 4: Simplify right side
    18,691.08x = 196,422,375.08
  5. Step 5: Solve for x
    x = 196,422,375.08/18,691.08
  6. Step 6: Final answer
    x = 10,508.88

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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.