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Finding the Fourth Proportional to 11,363.97, 15,679.11 and 7,329.09

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Solution

The fourth proportional to 11,363.97, 15,679.11 and 7,329.09 is: 10,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,363.97 : 15,679.11 = 7,329.09 : x
  2. Step 2: Convert to fraction form
    11,363.97/15,679.11 = 7,329.09/x
  3. Step 3: Cross multiply
    11,363.97x = 15,679.11 × 7,329.09
  4. Step 4: Simplify right side
    11,363.97x = 114,913,608.31
  5. Step 5: Solve for x
    x = 114,913,608.31/11,363.97
  6. Step 6: Final answer
    x = 10,112.10

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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.