Home / 12,387.60-18,583.80-6,231.60

Finding the Fourth Proportional to 12,387.60, 18,583.80 and 6,231.60

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Solution

The fourth proportional to 12,387.60, 18,583.80 and 6,231.60 is: 9,348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.60 : 18,583.80 = 6,231.60 : x
  2. Step 2: Convert to fraction form
    12,387.60/18,583.80 = 6,231.60/x
  3. Step 3: Cross multiply
    12,387.60x = 18,583.80 × 6,231.60
  4. Step 4: Simplify right side
    12,387.60x = 115,806,808.08
  5. Step 5: Solve for x
    x = 115,806,808.08/12,387.60
  6. Step 6: Final answer
    x = 9,348.61

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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.