Home / 18,519.40-27,787.94-8,657.25

Finding the Fourth Proportional to 18,519.40, 27,787.94 and 8,657.25

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Solution

The fourth proportional to 18,519.40, 27,787.94 and 8,657.25 is: 12,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.40 : 27,787.94 = 8,657.25 : x
  2. Step 2: Convert to fraction form
    18,519.40/27,787.94 = 8,657.25/x
  3. Step 3: Cross multiply
    18,519.40x = 27,787.94 × 8,657.25
  4. Step 4: Simplify right side
    18,519.40x = 240,567,143.57
  5. Step 5: Solve for x
    x = 240,567,143.57/18,519.40
  6. Step 6: Final answer
    x = 12,990.01

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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.