Home / 20,632.38-28,479.16-13,180.38

Finding the Fourth Proportional to 20,632.38, 28,479.16 and 13,180.38

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Solution

The fourth proportional to 20,632.38, 28,479.16 and 13,180.38 is: 18,193.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.38 : 28,479.16 = 13,180.38 : x
  2. Step 2: Convert to fraction form
    20,632.38/28,479.16 = 13,180.38/x
  3. Step 3: Cross multiply
    20,632.38x = 28,479.16 × 13,180.38
  4. Step 4: Simplify right side
    20,632.38x = 375,366,150.88
  5. Step 5: Solve for x
    x = 375,366,150.88/20,632.38
  6. Step 6: Final answer
    x = 18,193.06

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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.