Home / 18,217.80-27,321.30-7,118.10

Finding the Fourth Proportional to 18,217.80, 27,321.30 and 7,118.10

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Solution

The fourth proportional to 18,217.80, 27,321.30 and 7,118.10 is: 10,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.80 : 27,321.30 = 7,118.10 : x
  2. Step 2: Convert to fraction form
    18,217.80/27,321.30 = 7,118.10/x
  3. Step 3: Cross multiply
    18,217.80x = 27,321.30 × 7,118.10
  4. Step 4: Simplify right side
    18,217.80x = 194,475,745.53
  5. Step 5: Solve for x
    x = 194,475,745.53/18,217.80
  6. Step 6: Final answer
    x = 10,675.04

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1.5x scale

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.