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Finding the Fourth Proportional to 11,325, 15,628.50 and 6,357

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Solution

The fourth proportional to 11,325, 15,628.50 and 6,357 is: 8,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325 : 15,628.50 = 6,357 : x
  2. Step 2: Convert to fraction form
    11,325/15,628.50 = 6,357/x
  3. Step 3: Cross multiply
    11,325x = 15,628.50 × 6,357
  4. Step 4: Simplify right side
    11,325x = 99,350,374.50
  5. Step 5: Solve for x
    x = 99,350,374.50/11,325
  6. Step 6: Final answer
    x = 8,772.66

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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.