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Finding the Fourth Proportional to 10,360.80, 15,523.92 and 7,277.28

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Solution

The fourth proportional to 10,360.80, 15,523.92 and 7,277.28 is: 10,903.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,360.80 : 15,523.92 = 7,277.28 : x
  2. Step 2: Convert to fraction form
    10,360.80/15,523.92 = 7,277.28/x
  3. Step 3: Cross multiply
    10,360.80x = 15,523.92 × 7,277.28
  4. Step 4: Simplify right side
    10,360.80x = 112,971,912.54
  5. Step 5: Solve for x
    x = 112,971,912.54/10,360.80
  6. Step 6: Final answer
    x = 10,903.78

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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.