Home / 11,815.38-16,296.84-7,777.32

Finding the Fourth Proportional to 11,815.38, 16,296.84 and 7,777.32

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Solution

The fourth proportional to 11,815.38, 16,296.84 and 7,777.32 is: 10,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.38 : 16,296.84 = 7,777.32 : x
  2. Step 2: Convert to fraction form
    11,815.38/16,296.84 = 7,777.32/x
  3. Step 3: Cross multiply
    11,815.38x = 16,296.84 × 7,777.32
  4. Step 4: Simplify right side
    11,815.38x = 126,745,739.67
  5. Step 5: Solve for x
    x = 126,745,739.67/11,815.38
  6. Step 6: Final answer
    x = 10,727.18

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.