Home / 12,132.18-18,198.30-3,698.76

Finding the Fourth Proportional to 12,132.18, 18,198.30 and 3,698.76

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Solution

The fourth proportional to 12,132.18, 18,198.30 and 3,698.76 is: 5,548.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.18 : 18,198.30 = 3,698.76 : x
  2. Step 2: Convert to fraction form
    12,132.18/18,198.30 = 3,698.76/x
  3. Step 3: Cross multiply
    12,132.18x = 18,198.30 × 3,698.76
  4. Step 4: Simplify right side
    12,132.18x = 67,311,144.11
  5. Step 5: Solve for x
    x = 67,311,144.11/12,132.18
  6. Step 6: Final answer
    x = 5,548.15

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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.