Home / 11,279.90-16,920.12-3,884.24

Finding the Fourth Proportional to 11,279.90, 16,920.12 and 3,884.24

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Solution

The fourth proportional to 11,279.90, 16,920.12 and 3,884.24 is: 5,826.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.90 : 16,920.12 = 3,884.24 : x
  2. Step 2: Convert to fraction form
    11,279.90/16,920.12 = 3,884.24/x
  3. Step 3: Cross multiply
    11,279.90x = 16,920.12 × 3,884.24
  4. Step 4: Simplify right side
    11,279.90x = 65,721,806.91
  5. Step 5: Solve for x
    x = 65,721,806.91/11,279.90
  6. Step 6: Final answer
    x = 5,826.45

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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.