Home / 20,129.92-30,195.56-5,340.33

Finding the Fourth Proportional to 20,129.92, 30,195.56 and 5,340.33

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Solution

The fourth proportional to 20,129.92, 30,195.56 and 5,340.33 is: 8,010.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.92 : 30,195.56 = 5,340.33 : x
  2. Step 2: Convert to fraction form
    20,129.92/30,195.56 = 5,340.33/x
  3. Step 3: Cross multiply
    20,129.92x = 30,195.56 × 5,340.33
  4. Step 4: Simplify right side
    20,129.92x = 161,254,254.93
  5. Step 5: Solve for x
    x = 161,254,254.93/20,129.92
  6. Step 6: Final answer
    x = 8,010.68

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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.