Home / 43,877.97-65,816.96-20,520.81

Finding the Fourth Proportional to 43,877.97, 65,816.96 and 20,520.81

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Solution

The fourth proportional to 43,877.97, 65,816.96 and 20,520.81 is: 30,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,877.97 : 65,816.96 = 20,520.81 : x
  2. Step 2: Convert to fraction form
    43,877.97/65,816.96 = 20,520.81/x
  3. Step 3: Cross multiply
    43,877.97x = 65,816.96 × 20,520.81
  4. Step 4: Simplify right side
    43,877.97x = 1,350,617,228.33
  5. Step 5: Solve for x
    x = 1,350,617,228.33/43,877.97
  6. Step 6: Final answer
    x = 30,781.22

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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.