Home / 15,589.82-21,512.96-8,516.25

Finding the Fourth Proportional to 15,589.82, 21,512.96 and 8,516.25

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Solution

The fourth proportional to 15,589.82, 21,512.96 and 8,516.25 is: 11,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.82 : 21,512.96 = 8,516.25 : x
  2. Step 2: Convert to fraction form
    15,589.82/21,512.96 = 8,516.25/x
  3. Step 3: Cross multiply
    15,589.82x = 21,512.96 × 8,516.25
  4. Step 4: Simplify right side
    15,589.82x = 183,209,766.89
  5. Step 5: Solve for x
    x = 183,209,766.89/15,589.82
  6. Step 6: Final answer
    x = 11,751.88

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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.