Home / 20,011.73-27,617.25-11,515.15

Finding the Fourth Proportional to 20,011.73, 27,617.25 and 11,515.15

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Solution

The fourth proportional to 20,011.73, 27,617.25 and 11,515.15 is: 15,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,011.73 : 27,617.25 = 11,515.15 : x
  2. Step 2: Convert to fraction form
    20,011.73/27,617.25 = 11,515.15/x
  3. Step 3: Cross multiply
    20,011.73x = 27,617.25 × 11,515.15
  4. Step 4: Simplify right side
    20,011.73x = 318,016,776.34
  5. Step 5: Solve for x
    x = 318,016,776.34/20,011.73
  6. Step 6: Final answer
    x = 15,891.52

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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.