Home / 11,518.92-17,260.39-8,015.78

Finding the Fourth Proportional to 11,518.92, 17,260.39 and 8,015.78

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Solution

The fourth proportional to 11,518.92, 17,260.39 and 8,015.78 is: 12,011.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,518.92 : 17,260.39 = 8,015.78 : x
  2. Step 2: Convert to fraction form
    11,518.92/17,260.39 = 8,015.78/x
  3. Step 3: Cross multiply
    11,518.92x = 17,260.39 × 8,015.78
  4. Step 4: Simplify right side
    11,518.92x = 138,355,488.95
  5. Step 5: Solve for x
    x = 138,355,488.95/11,518.92
  6. Step 6: Final answer
    x = 12,011.15

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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.