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Finding the Fourth Proportional to 15,963.66, 22,027.68 and 8,889.12

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Solution

The fourth proportional to 15,963.66, 22,027.68 and 8,889.12 is: 12,265.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,963.66 : 22,027.68 = 8,889.12 : x
  2. Step 2: Convert to fraction form
    15,963.66/22,027.68 = 8,889.12/x
  3. Step 3: Cross multiply
    15,963.66x = 22,027.68 × 8,889.12
  4. Step 4: Simplify right side
    15,963.66x = 195,806,690.84
  5. Step 5: Solve for x
    x = 195,806,690.84/15,963.66
  6. Step 6: Final answer
    x = 12,265.78

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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.