Home / 10,912.20-15,054.08-6,876.59

Finding the Fourth Proportional to 10,912.20, 15,054.08 and 6,876.59

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Solution

The fourth proportional to 10,912.20, 15,054.08 and 6,876.59 is: 9,486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.20 : 15,054.08 = 6,876.59 : x
  2. Step 2: Convert to fraction form
    10,912.20/15,054.08 = 6,876.59/x
  3. Step 3: Cross multiply
    10,912.20x = 15,054.08 × 6,876.59
  4. Step 4: Simplify right side
    10,912.20x = 103,520,626.33
  5. Step 5: Solve for x
    x = 103,520,626.33/10,912.20
  6. Step 6: Final answer
    x = 9,486.69

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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.