Home / 43,685.43-65,517.30-18,722.64

Finding the Fourth Proportional to 43,685.43, 65,517.30 and 18,722.64

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Solution

The fourth proportional to 43,685.43, 65,517.30 and 18,722.64 is: 28,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,685.43 : 65,517.30 = 18,722.64 : x
  2. Step 2: Convert to fraction form
    43,685.43/65,517.30 = 18,722.64/x
  3. Step 3: Cross multiply
    43,685.43x = 65,517.30 × 18,722.64
  4. Step 4: Simplify right side
    43,685.43x = 1,226,656,821.67
  5. Step 5: Solve for x
    x = 1,226,656,821.67/43,685.43
  6. Step 6: Final answer
    x = 28,079.32

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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.