Home / 12,409.22-17,142.14-11,288.18

Finding the Fourth Proportional to 12,409.22, 17,142.14 and 11,288.18

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Solution

The fourth proportional to 12,409.22, 17,142.14 and 11,288.18 is: 15,593.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.22 : 17,142.14 = 11,288.18 : x
  2. Step 2: Convert to fraction form
    12,409.22/17,142.14 = 11,288.18/x
  3. Step 3: Cross multiply
    12,409.22x = 17,142.14 × 11,288.18
  4. Step 4: Simplify right side
    12,409.22x = 193,503,419.75
  5. Step 5: Solve for x
    x = 193,503,419.75/12,409.22
  6. Step 6: Final answer
    x = 15,593.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.