Home / 28,469.28-42,718.68-20,202.48

Finding the Fourth Proportional to 28,469.28, 42,718.68 and 20,202.48

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Solution

The fourth proportional to 28,469.28, 42,718.68 and 20,202.48 is: 30,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.28 : 42,718.68 = 20,202.48 : x
  2. Step 2: Convert to fraction form
    28,469.28/42,718.68 = 20,202.48/x
  3. Step 3: Cross multiply
    28,469.28x = 42,718.68 × 20,202.48
  4. Step 4: Simplify right side
    28,469.28x = 863,023,278.33
  5. Step 5: Solve for x
    x = 863,023,278.33/28,469.28
  6. Step 6: Final answer
    x = 30,314.19

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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.