Home / 20,759.40-31,151.41-19,445.91

Finding the Fourth Proportional to 20,759.40, 31,151.41 and 19,445.91

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Solution

The fourth proportional to 20,759.40, 31,151.41 and 19,445.91 is: 29,180.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.40 : 31,151.41 = 19,445.91 : x
  2. Step 2: Convert to fraction form
    20,759.40/31,151.41 = 19,445.91/x
  3. Step 3: Cross multiply
    20,759.40x = 31,151.41 × 19,445.91
  4. Step 4: Simplify right side
    20,759.40x = 605,767,466.62
  5. Step 5: Solve for x
    x = 605,767,466.62/20,759.40
  6. Step 6: Final answer
    x = 29,180.39

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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.