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Finding the Fourth Proportional to 15,896.58, 21,939.90 and 8,825.28

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Solution

The fourth proportional to 15,896.58, 21,939.90 and 8,825.28 is: 12,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,896.58 : 21,939.90 = 8,825.28 : x
  2. Step 2: Convert to fraction form
    15,896.58/21,939.90 = 8,825.28/x
  3. Step 3: Cross multiply
    15,896.58x = 21,939.90 × 8,825.28
  4. Step 4: Simplify right side
    15,896.58x = 193,625,760.67
  5. Step 5: Solve for x
    x = 193,625,760.67/15,896.58
  6. Step 6: Final answer
    x = 12,180.34

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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.