Home / 15,912.75-21,959.61-8,839.83

Finding the Fourth Proportional to 15,912.75, 21,959.61 and 8,839.83

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Solution

The fourth proportional to 15,912.75, 21,959.61 and 8,839.83 is: 12,198.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.75 : 21,959.61 = 8,839.83 : x
  2. Step 2: Convert to fraction form
    15,912.75/21,959.61 = 8,839.83/x
  3. Step 3: Cross multiply
    15,912.75x = 21,959.61 × 8,839.83
  4. Step 4: Simplify right side
    15,912.75x = 194,119,219.27
  5. Step 5: Solve for x
    x = 194,119,219.27/15,912.75
  6. Step 6: Final answer
    x = 12,198.97

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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.