Home / 11,119.30-16,680.98-5,275.86

Finding the Fourth Proportional to 11,119.30, 16,680.98 and 5,275.86

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Solution

The fourth proportional to 11,119.30, 16,680.98 and 5,275.86 is: 7,914.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.30 : 16,680.98 = 5,275.86 : x
  2. Step 2: Convert to fraction form
    11,119.30/16,680.98 = 5,275.86/x
  3. Step 3: Cross multiply
    11,119.30x = 16,680.98 × 5,275.86
  4. Step 4: Simplify right side
    11,119.30x = 88,006,515.14
  5. Step 5: Solve for x
    x = 88,006,515.14/11,119.30
  6. Step 6: Final answer
    x = 7,914.75

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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.