Home / 27,311.32-40,982.88-11,515.36

Finding the Fourth Proportional to 27,311.32, 40,982.88 and 11,515.36

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Solution

The fourth proportional to 27,311.32, 40,982.88 and 11,515.36 is: 17,279.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,311.32 : 40,982.88 = 11,515.36 : x
  2. Step 2: Convert to fraction form
    27,311.32/40,982.88 = 11,515.36/x
  3. Step 3: Cross multiply
    27,311.32x = 40,982.88 × 11,515.36
  4. Step 4: Simplify right side
    27,311.32x = 471,932,617.04
  5. Step 5: Solve for x
    x = 471,932,617.04/27,311.32
  6. Step 6: Final answer
    x = 17,279.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.