Home / 18,321.43-27,479.65-5,174.86

Finding the Fourth Proportional to 18,321.43, 27,479.65 and 5,174.86

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Solution

The fourth proportional to 18,321.43, 27,479.65 and 5,174.86 is: 7,761.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.43 : 27,479.65 = 5,174.86 : x
  2. Step 2: Convert to fraction form
    18,321.43/27,479.65 = 5,174.86/x
  3. Step 3: Cross multiply
    18,321.43x = 27,479.65 × 5,174.86
  4. Step 4: Simplify right side
    18,321.43x = 142,203,341.60
  5. Step 5: Solve for x
    x = 142,203,341.60/18,321.43
  6. Step 6: Final answer
    x = 7,761.59

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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.