Home / 11,315.91-15,611.67-8,338.85

Finding the Fourth Proportional to 11,315.91, 15,611.67 and 8,338.85

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Solution

The fourth proportional to 11,315.91, 15,611.67 and 8,338.85 is: 11,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.91 : 15,611.67 = 8,338.85 : x
  2. Step 2: Convert to fraction form
    11,315.91/15,611.67 = 8,338.85/x
  3. Step 3: Cross multiply
    11,315.91x = 15,611.67 × 8,338.85
  4. Step 4: Simplify right side
    11,315.91x = 130,183,296.32
  5. Step 5: Solve for x
    x = 130,183,296.32/11,315.91
  6. Step 6: Final answer
    x = 11,504.45

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Half scale
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Double scale
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Similar ratio
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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.