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Finding the Fourth Proportional to 15,902.78, 21,944.25 and 8,828.44

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Solution

The fourth proportional to 15,902.78, 21,944.25 and 8,828.44 is: 12,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.78 : 21,944.25 = 8,828.44 : x
  2. Step 2: Convert to fraction form
    15,902.78/21,944.25 = 8,828.44/x
  3. Step 3: Cross multiply
    15,902.78x = 21,944.25 × 8,828.44
  4. Step 4: Simplify right side
    15,902.78x = 193,733,494.47
  5. Step 5: Solve for x
    x = 193,733,494.47/15,902.78
  6. Step 6: Final answer
    x = 12,182.37

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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.