Home / 12,458.61-18,687.87-3,098.58

Finding the Fourth Proportional to 12,458.61, 18,687.87 and 3,098.58

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Solution

The fourth proportional to 12,458.61, 18,687.87 and 3,098.58 is: 4,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.61 : 18,687.87 = 3,098.58 : x
  2. Step 2: Convert to fraction form
    12,458.61/18,687.87 = 3,098.58/x
  3. Step 3: Cross multiply
    12,458.61x = 18,687.87 × 3,098.58
  4. Step 4: Simplify right side
    12,458.61x = 57,905,860.22
  5. Step 5: Solve for x
    x = 57,905,860.22/12,458.61
  6. Step 6: Final answer
    x = 4,647.86

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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.