Home / 12,231.57-18,347.37-11,608.29

Finding the Fourth Proportional to 12,231.57, 18,347.37 and 11,608.29

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Solution

The fourth proportional to 12,231.57, 18,347.37 and 11,608.29 is: 17,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.57 : 18,347.37 = 11,608.29 : x
  2. Step 2: Convert to fraction form
    12,231.57/18,347.37 = 11,608.29/x
  3. Step 3: Cross multiply
    12,231.57x = 18,347.37 × 11,608.29
  4. Step 4: Simplify right side
    12,231.57x = 212,981,591.70
  5. Step 5: Solve for x
    x = 212,981,591.70/12,231.57
  6. Step 6: Final answer
    x = 17,412.45

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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.