Home / 43,975.20-65,962.80-12,385.20

Finding the Fourth Proportional to 43,975.20, 65,962.80 and 12,385.20

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Solution

The fourth proportional to 43,975.20, 65,962.80 and 12,385.20 is: 18,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,975.20 : 65,962.80 = 12,385.20 : x
  2. Step 2: Convert to fraction form
    43,975.20/65,962.80 = 12,385.20/x
  3. Step 3: Cross multiply
    43,975.20x = 65,962.80 × 12,385.20
  4. Step 4: Simplify right side
    43,975.20x = 816,962,470.56
  5. Step 5: Solve for x
    x = 816,962,470.56/43,975.20
  6. Step 6: Final answer
    x = 18,577.80

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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.