Home / 18,581.28-27,885.59-12,339.22

Finding the Fourth Proportional to 18,581.28, 27,885.59 and 12,339.22

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Solution

The fourth proportional to 18,581.28, 27,885.59 and 12,339.22 is: 18,517.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.28 : 27,885.59 = 12,339.22 : x
  2. Step 2: Convert to fraction form
    18,581.28/27,885.59 = 12,339.22/x
  3. Step 3: Cross multiply
    18,581.28x = 27,885.59 × 12,339.22
  4. Step 4: Simplify right side
    18,581.28x = 344,086,431.69
  5. Step 5: Solve for x
    x = 344,086,431.69/18,581.28
  6. Step 6: Final answer
    x = 18,517.91

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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.