Home / 20,759.28-31,151.22-19,445.79

Finding the Fourth Proportional to 20,759.28, 31,151.22 and 19,445.79

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Solution

The fourth proportional to 20,759.28, 31,151.22 and 19,445.79 is: 29,180.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.28 : 31,151.22 = 19,445.79 : x
  2. Step 2: Convert to fraction form
    20,759.28/31,151.22 = 19,445.79/x
  3. Step 3: Cross multiply
    20,759.28x = 31,151.22 × 19,445.79
  4. Step 4: Simplify right side
    20,759.28x = 605,759,829.38
  5. Step 5: Solve for x
    x = 605,759,829.38/20,759.28
  6. Step 6: Final answer
    x = 29,180.20

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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.