Home / 13,911.38-19,186.52-12,229.20

Finding the Fourth Proportional to 13,911.38, 19,186.52 and 12,229.20

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Solution

The fourth proportional to 13,911.38, 19,186.52 and 12,229.20 is: 16,866.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.38 : 19,186.52 = 12,229.20 : x
  2. Step 2: Convert to fraction form
    13,911.38/19,186.52 = 12,229.20/x
  3. Step 3: Cross multiply
    13,911.38x = 19,186.52 × 12,229.20
  4. Step 4: Simplify right side
    13,911.38x = 234,635,790.38
  5. Step 5: Solve for x
    x = 234,635,790.38/13,911.38
  6. Step 6: Final answer
    x = 16,866.46

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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.