Home / 12,228.89-18,356.99-11,425.82

Finding the Fourth Proportional to 12,228.89, 18,356.99 and 11,425.82

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Solution

The fourth proportional to 12,228.89, 18,356.99 and 11,425.82 is: 17,151.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.89 : 18,356.99 = 11,425.82 : x
  2. Step 2: Convert to fraction form
    12,228.89/18,356.99 = 11,425.82/x
  3. Step 3: Cross multiply
    12,228.89x = 18,356.99 × 11,425.82
  4. Step 4: Simplify right side
    12,228.89x = 209,743,514.57
  5. Step 5: Solve for x
    x = 209,743,514.57/12,228.89
  6. Step 6: Final answer
    x = 17,151.48

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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.