Home / 12,120.68-18,177.66-3,354.92

Finding the Fourth Proportional to 12,120.68, 18,177.66 and 3,354.92

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Solution

The fourth proportional to 12,120.68, 18,177.66 and 3,354.92 is: 5,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.68 : 18,177.66 = 3,354.92 : x
  2. Step 2: Convert to fraction form
    12,120.68/18,177.66 = 3,354.92/x
  3. Step 3: Cross multiply
    12,120.68x = 18,177.66 × 3,354.92
  4. Step 4: Simplify right side
    12,120.68x = 60,984,595.09
  5. Step 5: Solve for x
    x = 60,984,595.09/12,120.68
  6. Step 6: Final answer
    x = 5,031.45

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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.