Home / 11,147.32-16,721.08-4,821.02

Finding the Fourth Proportional to 11,147.32, 16,721.08 and 4,821.02

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Solution

The fourth proportional to 11,147.32, 16,721.08 and 4,821.02 is: 7,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.32 : 16,721.08 = 4,821.02 : x
  2. Step 2: Convert to fraction form
    11,147.32/16,721.08 = 4,821.02/x
  3. Step 3: Cross multiply
    11,147.32x = 16,721.08 × 4,821.02
  4. Step 4: Simplify right side
    11,147.32x = 80,612,655.27
  5. Step 5: Solve for x
    x = 80,612,655.27/11,147.32
  6. Step 6: Final answer
    x = 7,231.57

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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.