Home / 11,185.48-15,420.07-8,896.75

Finding the Fourth Proportional to 11,185.48, 15,420.07 and 8,896.75

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Solution

The fourth proportional to 11,185.48, 15,420.07 and 8,896.75 is: 12,264.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.48 : 15,420.07 = 8,896.75 : x
  2. Step 2: Convert to fraction form
    11,185.48/15,420.07 = 8,896.75/x
  3. Step 3: Cross multiply
    11,185.48x = 15,420.07 × 8,896.75
  4. Step 4: Simplify right side
    11,185.48x = 137,188,517.04
  5. Step 5: Solve for x
    x = 137,188,517.04/11,185.48
  6. Step 6: Final answer
    x = 12,264.88

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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.