Home / 13,119.49-18,116.22-11,249.61

Finding the Fourth Proportional to 13,119.49, 18,116.22 and 11,249.61

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Solution

The fourth proportional to 13,119.49, 18,116.22 and 11,249.61 is: 15,534.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.49 : 18,116.22 = 11,249.61 : x
  2. Step 2: Convert to fraction form
    13,119.49/18,116.22 = 11,249.61/x
  3. Step 3: Cross multiply
    13,119.49x = 18,116.22 × 11,249.61
  4. Step 4: Simplify right side
    13,119.49x = 203,800,387.42
  5. Step 5: Solve for x
    x = 203,800,387.42/13,119.49
  6. Step 6: Final answer
    x = 15,534.17

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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.