Home / 18,321.18-27,478.67-5,170.47

Finding the Fourth Proportional to 18,321.18, 27,478.67 and 5,170.47

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Solution

The fourth proportional to 18,321.18, 27,478.67 and 5,170.47 is: 7,754.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.18 : 27,478.67 = 5,170.47 : x
  2. Step 2: Convert to fraction form
    18,321.18/27,478.67 = 5,170.47/x
  3. Step 3: Cross multiply
    18,321.18x = 27,478.67 × 5,170.47
  4. Step 4: Simplify right side
    18,321.18x = 142,077,613.02
  5. Step 5: Solve for x
    x = 142,077,613.02/18,321.18
  6. Step 6: Final answer
    x = 7,754.83

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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.