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Finding the Fourth Proportional to 11,475.68, 15,845.78 and 9,351.54

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Solution

The fourth proportional to 11,475.68, 15,845.78 and 9,351.54 is: 12,912.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.68 : 15,845.78 = 9,351.54 : x
  2. Step 2: Convert to fraction form
    11,475.68/15,845.78 = 9,351.54/x
  3. Step 3: Cross multiply
    11,475.68x = 15,845.78 × 9,351.54
  4. Step 4: Simplify right side
    11,475.68x = 148,182,445.50
  5. Step 5: Solve for x
    x = 148,182,445.50/11,475.68
  6. Step 6: Final answer
    x = 12,912.74

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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.