Home / 20,330.25-28,082.55-15,608.53

Finding the Fourth Proportional to 20,330.25, 28,082.55 and 15,608.53

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Solution

The fourth proportional to 20,330.25, 28,082.55 and 15,608.53 is: 21,560.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.25 : 28,082.55 = 15,608.53 : x
  2. Step 2: Convert to fraction form
    20,330.25/28,082.55 = 15,608.53/x
  3. Step 3: Cross multiply
    20,330.25x = 28,082.55 × 15,608.53
  4. Step 4: Simplify right side
    20,330.25x = 438,327,324.15
  5. Step 5: Solve for x
    x = 438,327,324.15/20,330.25
  6. Step 6: Final answer
    x = 21,560.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.