Home / 15,204.16-20,979.23-8,488.71

Finding the Fourth Proportional to 15,204.16, 20,979.23 and 8,488.71

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Solution

The fourth proportional to 15,204.16, 20,979.23 and 8,488.71 is: 11,713.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,204.16 : 20,979.23 = 8,488.71 : x
  2. Step 2: Convert to fraction form
    15,204.16/20,979.23 = 8,488.71/x
  3. Step 3: Cross multiply
    15,204.16x = 20,979.23 × 8,488.71
  4. Step 4: Simplify right side
    15,204.16x = 178,086,515.82
  5. Step 5: Solve for x
    x = 178,086,515.82/15,204.16
  6. Step 6: Final answer
    x = 11,713.02

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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.