Home / 43,679.86-65,519.61-12,515.11

Finding the Fourth Proportional to 43,679.86, 65,519.61 and 12,515.11

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Solution

The fourth proportional to 43,679.86, 65,519.61 and 12,515.11 is: 18,772.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,679.86 : 65,519.61 = 12,515.11 : x
  2. Step 2: Convert to fraction form
    43,679.86/65,519.61 = 12,515.11/x
  3. Step 3: Cross multiply
    43,679.86x = 65,519.61 × 12,515.11
  4. Step 4: Simplify right side
    43,679.86x = 819,985,126.31
  5. Step 5: Solve for x
    x = 819,985,126.31/43,679.86
  6. Step 6: Final answer
    x = 18,772.61

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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.