Home / 18,375.18-27,562.80-6,689.31

Finding the Fourth Proportional to 18,375.18, 27,562.80 and 6,689.31

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Solution

The fourth proportional to 18,375.18, 27,562.80 and 6,689.31 is: 10,033.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.18 : 27,562.80 = 6,689.31 : x
  2. Step 2: Convert to fraction form
    18,375.18/27,562.80 = 6,689.31/x
  3. Step 3: Cross multiply
    18,375.18x = 27,562.80 × 6,689.31
  4. Step 4: Simplify right side
    18,375.18x = 184,376,113.67
  5. Step 5: Solve for x
    x = 184,376,113.67/18,375.18
  6. Step 6: Final answer
    x = 10,033.98

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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.