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Finding the Fourth Proportional to 15,960.97, 22,025.25 and 8,789.48

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Solution

The fourth proportional to 15,960.97, 22,025.25 and 8,789.48 is: 12,128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,960.97 : 22,025.25 = 8,789.48 : x
  2. Step 2: Convert to fraction form
    15,960.97/22,025.25 = 8,789.48/x
  3. Step 3: Cross multiply
    15,960.97x = 22,025.25 × 8,789.48
  4. Step 4: Simplify right side
    15,960.97x = 193,590,494.37
  5. Step 5: Solve for x
    x = 193,590,494.37/15,960.97
  6. Step 6: Final answer
    x = 12,128.99

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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.