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Finding the Fourth Proportional to 10,503.27, 15,750.09 and 3,105.09

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Solution

The fourth proportional to 10,503.27, 15,750.09 and 3,105.09 is: 4,656.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,503.27 : 15,750.09 = 3,105.09 : x
  2. Step 2: Convert to fraction form
    10,503.27/15,750.09 = 3,105.09/x
  3. Step 3: Cross multiply
    10,503.27x = 15,750.09 × 3,105.09
  4. Step 4: Simplify right side
    10,503.27x = 48,905,446.96
  5. Step 5: Solve for x
    x = 48,905,446.96/10,503.27
  6. Step 6: Final answer
    x = 4,656.21

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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.