Home / 19,895.20-29,864.40-11,147.20

Finding the Fourth Proportional to 19,895.20, 29,864.40 and 11,147.20

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Solution

The fourth proportional to 19,895.20, 29,864.40 and 11,147.20 is: 16,732.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,895.20 : 29,864.40 = 11,147.20 : x
  2. Step 2: Convert to fraction form
    19,895.20/29,864.40 = 11,147.20/x
  3. Step 3: Cross multiply
    19,895.20x = 29,864.40 × 11,147.20
  4. Step 4: Simplify right side
    19,895.20x = 332,904,439.68
  5. Step 5: Solve for x
    x = 332,904,439.68/19,895.20
  6. Step 6: Final answer
    x = 16,732.90

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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.