Home / 12,221.38-18,332.97-5,986.63

Finding the Fourth Proportional to 12,221.38, 18,332.97 and 5,986.63

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Solution

The fourth proportional to 12,221.38, 18,332.97 and 5,986.63 is: 8,980.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.38 : 18,332.97 = 5,986.63 : x
  2. Step 2: Convert to fraction form
    12,221.38/18,332.97 = 5,986.63/x
  3. Step 3: Cross multiply
    12,221.38x = 18,332.97 × 5,986.63
  4. Step 4: Simplify right side
    12,221.38x = 109,752,708.19
  5. Step 5: Solve for x
    x = 109,752,708.19/12,221.38
  6. Step 6: Final answer
    x = 8,980.39

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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.