Home / 20,270.43-30,404.15-7,122.93

Finding the Fourth Proportional to 20,270.43, 30,404.15 and 7,122.93

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Solution

The fourth proportional to 20,270.43, 30,404.15 and 7,122.93 is: 10,683.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.43 : 30,404.15 = 7,122.93 : x
  2. Step 2: Convert to fraction form
    20,270.43/30,404.15 = 7,122.93/x
  3. Step 3: Cross multiply
    20,270.43x = 30,404.15 × 7,122.93
  4. Step 4: Simplify right side
    20,270.43x = 216,566,596.54
  5. Step 5: Solve for x
    x = 216,566,596.54/20,270.43
  6. Step 6: Final answer
    x = 10,683.87

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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.