Home / 10,686.44-16,025.20-5,138.48

Finding the Fourth Proportional to 10,686.44, 16,025.20 and 5,138.48

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Solution

The fourth proportional to 10,686.44, 16,025.20 and 5,138.48 is: 7,705.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686.44 : 16,025.20 = 5,138.48 : x
  2. Step 2: Convert to fraction form
    10,686.44/16,025.20 = 5,138.48/x
  3. Step 3: Cross multiply
    10,686.44x = 16,025.20 × 5,138.48
  4. Step 4: Simplify right side
    10,686.44x = 82,345,169.70
  5. Step 5: Solve for x
    x = 82,345,169.70/10,686.44
  6. Step 6: Final answer
    x = 7,705.58

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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.