Home / 11,318.28-15,608.34-8,796.78

Finding the Fourth Proportional to 11,318.28, 15,608.34 and 8,796.78

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Solution

The fourth proportional to 11,318.28, 15,608.34 and 8,796.78 is: 12,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.28 : 15,608.34 = 8,796.78 : x
  2. Step 2: Convert to fraction form
    11,318.28/15,608.34 = 8,796.78/x
  3. Step 3: Cross multiply
    11,318.28x = 15,608.34 × 8,796.78
  4. Step 4: Simplify right side
    11,318.28x = 137,303,133.15
  5. Step 5: Solve for x
    x = 137,303,133.15/11,318.28
  6. Step 6: Final answer
    x = 12,131.10

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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.