Home / 28,772.15-43,164.11-12,132.20

Finding the Fourth Proportional to 28,772.15, 43,164.11 and 12,132.20

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Solution

The fourth proportional to 28,772.15, 43,164.11 and 12,132.20 is: 18,200.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,772.15 : 43,164.11 = 12,132.20 : x
  2. Step 2: Convert to fraction form
    28,772.15/43,164.11 = 12,132.20/x
  3. Step 3: Cross multiply
    28,772.15x = 43,164.11 × 12,132.20
  4. Step 4: Simplify right side
    28,772.15x = 523,675,615.34
  5. Step 5: Solve for x
    x = 523,675,615.34/28,772.15
  6. Step 6: Final answer
    x = 18,200.78

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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.