Home / 20,863.98-31,299.62-11,499.98

Finding the Fourth Proportional to 20,863.98, 31,299.62 and 11,499.98

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Solution

The fourth proportional to 20,863.98, 31,299.62 and 11,499.98 is: 17,251.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.98 : 31,299.62 = 11,499.98 : x
  2. Step 2: Convert to fraction form
    20,863.98/31,299.62 = 11,499.98/x
  3. Step 3: Cross multiply
    20,863.98x = 31,299.62 × 11,499.98
  4. Step 4: Simplify right side
    20,863.98x = 359,944,790.01
  5. Step 5: Solve for x
    x = 359,944,790.01/20,863.98
  6. Step 6: Final answer
    x = 17,251.97

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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.