Home / 12,117.20-18,179.28-4,326.56

Finding the Fourth Proportional to 12,117.20, 18,179.28 and 4,326.56

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Solution

The fourth proportional to 12,117.20, 18,179.28 and 4,326.56 is: 6,491.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.20 : 18,179.28 = 4,326.56 : x
  2. Step 2: Convert to fraction form
    12,117.20/18,179.28 = 4,326.56/x
  3. Step 3: Cross multiply
    12,117.20x = 18,179.28 × 4,326.56
  4. Step 4: Simplify right side
    12,117.20x = 78,653,745.68
  5. Step 5: Solve for x
    x = 78,653,745.68/12,117.20
  6. Step 6: Final answer
    x = 6,491.08

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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.