Home / 10,339.20-15,508.80-7,228.80

Finding the Fourth Proportional to 10,339.20, 15,508.80 and 7,228.80

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Solution

The fourth proportional to 10,339.20, 15,508.80 and 7,228.80 is: 10,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,339.20 : 15,508.80 = 7,228.80 : x
  2. Step 2: Convert to fraction form
    10,339.20/15,508.80 = 7,228.80/x
  3. Step 3: Cross multiply
    10,339.20x = 15,508.80 × 7,228.80
  4. Step 4: Simplify right side
    10,339.20x = 112,110,013.44
  5. Step 5: Solve for x
    x = 112,110,013.44/10,339.20
  6. Step 6: Final answer
    x = 10,843.20

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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.