Home / 18,974.72-28,449.28-6,656

Finding the Fourth Proportional to 18,974.72, 28,449.28 and 6,656

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Solution

The fourth proportional to 18,974.72, 28,449.28 and 6,656 is: 9,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.72 : 28,449.28 = 6,656 : x
  2. Step 2: Convert to fraction form
    18,974.72/28,449.28 = 6,656/x
  3. Step 3: Cross multiply
    18,974.72x = 28,449.28 × 6,656
  4. Step 4: Simplify right side
    18,974.72x = 189,358,407.68
  5. Step 5: Solve for x
    x = 189,358,407.68/18,974.72
  6. Step 6: Final answer
    x = 9,979.51

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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.