Home / 12,459.12-18,685.49-3,691.98

Finding the Fourth Proportional to 12,459.12, 18,685.49 and 3,691.98

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Solution

The fourth proportional to 12,459.12, 18,685.49 and 3,691.98 is: 5,537.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.12 : 18,685.49 = 3,691.98 : x
  2. Step 2: Convert to fraction form
    12,459.12/18,685.49 = 3,691.98/x
  3. Step 3: Cross multiply
    12,459.12x = 18,685.49 × 3,691.98
  4. Step 4: Simplify right side
    12,459.12x = 68,986,455.37
  5. Step 5: Solve for x
    x = 68,986,455.37/12,459.12
  6. Step 6: Final answer
    x = 5,537.02

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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.