Home / 12,117.33-18,178.92-4,218.68

Finding the Fourth Proportional to 12,117.33, 18,178.92 and 4,218.68

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Solution

The fourth proportional to 12,117.33, 18,178.92 and 4,218.68 is: 6,329.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.33 : 18,178.92 = 4,218.68 : x
  2. Step 2: Convert to fraction form
    12,117.33/18,178.92 = 4,218.68/x
  3. Step 3: Cross multiply
    12,117.33x = 18,178.92 × 4,218.68
  4. Step 4: Simplify right side
    12,117.33x = 76,691,091.67
  5. Step 5: Solve for x
    x = 76,691,091.67/12,117.33
  6. Step 6: Final answer
    x = 6,329.04

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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.