Home / 12,132.28-18,198.35-3,812.91

Finding the Fourth Proportional to 12,132.28, 18,198.35 and 3,812.91

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Solution

The fourth proportional to 12,132.28, 18,198.35 and 3,812.91 is: 5,719.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.28 : 18,198.35 = 3,812.91 : x
  2. Step 2: Convert to fraction form
    12,132.28/18,198.35 = 3,812.91/x
  3. Step 3: Cross multiply
    12,132.28x = 18,198.35 × 3,812.91
  4. Step 4: Simplify right side
    12,132.28x = 69,388,670.70
  5. Step 5: Solve for x
    x = 69,388,670.70/12,132.28
  6. Step 6: Final answer
    x = 5,719.34

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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.