Home / 11,072.40-15,276.26-6,291.78

Finding the Fourth Proportional to 11,072.40, 15,276.26 and 6,291.78

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Solution

The fourth proportional to 11,072.40, 15,276.26 and 6,291.78 is: 8,680.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,072.40 : 15,276.26 = 6,291.78 : x
  2. Step 2: Convert to fraction form
    11,072.40/15,276.26 = 6,291.78/x
  3. Step 3: Cross multiply
    11,072.40x = 15,276.26 × 6,291.78
  4. Step 4: Simplify right side
    11,072.40x = 96,114,867.14
  5. Step 5: Solve for x
    x = 96,114,867.14/11,072.40
  6. Step 6: Final answer
    x = 8,680.58

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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.