Home / 43,387.18-65,080.77-12,218.38

Finding the Fourth Proportional to 43,387.18, 65,080.77 and 12,218.38

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Solution

The fourth proportional to 43,387.18, 65,080.77 and 12,218.38 is: 18,327.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,387.18 : 65,080.77 = 12,218.38 : x
  2. Step 2: Convert to fraction form
    43,387.18/65,080.77 = 12,218.38/x
  3. Step 3: Cross multiply
    43,387.18x = 65,080.77 × 12,218.38
  4. Step 4: Simplify right side
    43,387.18x = 795,181,578.55
  5. Step 5: Solve for x
    x = 795,181,578.55/43,387.18
  6. Step 6: Final answer
    x = 18,327.57

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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.