Home / 20,000.81-27,599.97-11,943.55

Finding the Fourth Proportional to 20,000.81, 27,599.97 and 11,943.55

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Solution

The fourth proportional to 20,000.81, 27,599.97 and 11,943.55 is: 16,481.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.81 : 27,599.97 = 11,943.55 : x
  2. Step 2: Convert to fraction form
    20,000.81/27,599.97 = 11,943.55/x
  3. Step 3: Cross multiply
    20,000.81x = 27,599.97 × 11,943.55
  4. Step 4: Simplify right side
    20,000.81x = 329,641,660.83
  5. Step 5: Solve for x
    x = 329,641,660.83/20,000.81
  6. Step 6: Final answer
    x = 16,481.42

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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.