Home / 11,147.18-16,721.14-4,128.97

Finding the Fourth Proportional to 11,147.18, 16,721.14 and 4,128.97

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Solution

The fourth proportional to 11,147.18, 16,721.14 and 4,128.97 is: 6,193.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.18 : 16,721.14 = 4,128.97 : x
  2. Step 2: Convert to fraction form
    11,147.18/16,721.14 = 4,128.97/x
  3. Step 3: Cross multiply
    11,147.18x = 16,721.14 × 4,128.97
  4. Step 4: Simplify right side
    11,147.18x = 69,041,033.30
  5. Step 5: Solve for x
    x = 69,041,033.30/11,147.18
  6. Step 6: Final answer
    x = 6,193.59

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1.5x scale

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.