Home / 15,180.68-20,942.19-9,873.56

Finding the Fourth Proportional to 15,180.68, 20,942.19 and 9,873.56

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Solution

The fourth proportional to 15,180.68, 20,942.19 and 9,873.56 is: 13,620.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,180.68 : 20,942.19 = 9,873.56 : x
  2. Step 2: Convert to fraction form
    15,180.68/20,942.19 = 9,873.56/x
  3. Step 3: Cross multiply
    15,180.68x = 20,942.19 × 9,873.56
  4. Step 4: Simplify right side
    15,180.68x = 206,773,920.13
  5. Step 5: Solve for x
    x = 206,773,920.13/15,180.68
  6. Step 6: Final answer
    x = 13,620.86

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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.