Home / 20,082.47-30,121.40-5,292.54

Finding the Fourth Proportional to 20,082.47, 30,121.40 and 5,292.54

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Solution

The fourth proportional to 20,082.47, 30,121.40 and 5,292.54 is: 7,938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.47 : 30,121.40 = 5,292.54 : x
  2. Step 2: Convert to fraction form
    20,082.47/30,121.40 = 5,292.54/x
  3. Step 3: Cross multiply
    20,082.47x = 30,121.40 × 5,292.54
  4. Step 4: Simplify right side
    20,082.47x = 159,418,727.59
  5. Step 5: Solve for x
    x = 159,418,727.59/20,082.47
  6. Step 6: Final answer
    x = 7,938.21

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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.