Home / 18,707.20-28,060.56-5,380.52

Finding the Fourth Proportional to 18,707.20, 28,060.56 and 5,380.52

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Solution

The fourth proportional to 18,707.20, 28,060.56 and 5,380.52 is: 8,070.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.20 : 28,060.56 = 5,380.52 : x
  2. Step 2: Convert to fraction form
    18,707.20/28,060.56 = 5,380.52/x
  3. Step 3: Cross multiply
    18,707.20x = 28,060.56 × 5,380.52
  4. Step 4: Simplify right side
    18,707.20x = 150,980,404.29
  5. Step 5: Solve for x
    x = 150,980,404.29/18,707.20
  6. Step 6: Final answer
    x = 8,070.71

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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.