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Finding the Fourth Proportional to 10,356.44, 15,505.49 and 7,881.08

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Solution

The fourth proportional to 10,356.44, 15,505.49 and 7,881.08 is: 11,799.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,356.44 : 15,505.49 = 7,881.08 : x
  2. Step 2: Convert to fraction form
    10,356.44/15,505.49 = 7,881.08/x
  3. Step 3: Cross multiply
    10,356.44x = 15,505.49 × 7,881.08
  4. Step 4: Simplify right side
    10,356.44x = 122,199,949.30
  5. Step 5: Solve for x
    x = 122,199,949.30/10,356.44
  6. Step 6: Final answer
    x = 11,799.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.