Home / 12,209.95-18,279.28-11,042.61

Finding the Fourth Proportional to 12,209.95, 18,279.28 and 11,042.61

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Solution

The fourth proportional to 12,209.95, 18,279.28 and 11,042.61 is: 16,531.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.95 : 18,279.28 = 11,042.61 : x
  2. Step 2: Convert to fraction form
    12,209.95/18,279.28 = 11,042.61/x
  3. Step 3: Cross multiply
    12,209.95x = 18,279.28 × 11,042.61
  4. Step 4: Simplify right side
    12,209.95x = 201,850,960.12
  5. Step 5: Solve for x
    x = 201,850,960.12/12,209.95
  6. Step 6: Final answer
    x = 16,531.68

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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.