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Finding the Fourth Proportional to 10,913.72, 15,049.02 and 7,370.78

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Solution

The fourth proportional to 10,913.72, 15,049.02 and 7,370.78 is: 10,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.72 : 15,049.02 = 7,370.78 : x
  2. Step 2: Convert to fraction form
    10,913.72/15,049.02 = 7,370.78/x
  3. Step 3: Cross multiply
    10,913.72x = 15,049.02 × 7,370.78
  4. Step 4: Simplify right side
    10,913.72x = 110,922,990.49
  5. Step 5: Solve for x
    x = 110,922,990.49/10,913.72
  6. Step 6: Final answer
    x = 10,163.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.