Home / 43,878.22-65,817.33-20,521.06

Finding the Fourth Proportional to 43,878.22, 65,817.33 and 20,521.06

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Solution

The fourth proportional to 43,878.22, 65,817.33 and 20,521.06 is: 30,781.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,878.22 : 65,817.33 = 20,521.06 : x
  2. Step 2: Convert to fraction form
    43,878.22/65,817.33 = 20,521.06/x
  3. Step 3: Cross multiply
    43,878.22x = 65,817.33 × 20,521.06
  4. Step 4: Simplify right side
    43,878.22x = 1,350,641,377.97
  5. Step 5: Solve for x
    x = 1,350,641,377.97/43,878.22
  6. Step 6: Final answer
    x = 30,781.59

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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.