Home / 15,839.28-21,858.66-8,766.36

Finding the Fourth Proportional to 15,839.28, 21,858.66 and 8,766.36

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Solution

The fourth proportional to 15,839.28, 21,858.66 and 8,766.36 is: 12,097.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.28 : 21,858.66 = 8,766.36 : x
  2. Step 2: Convert to fraction form
    15,839.28/21,858.66 = 8,766.36/x
  3. Step 3: Cross multiply
    15,839.28x = 21,858.66 × 8,766.36
  4. Step 4: Simplify right side
    15,839.28x = 191,620,882.68
  5. Step 5: Solve for x
    x = 191,620,882.68/15,839.28
  6. Step 6: Final answer
    x = 12,097.83

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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.