Home / 11,693.38-16,136.87-6,388.18

Finding the Fourth Proportional to 11,693.38, 16,136.87 and 6,388.18

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Solution

The fourth proportional to 11,693.38, 16,136.87 and 6,388.18 is: 8,815.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,693.38 : 16,136.87 = 6,388.18 : x
  2. Step 2: Convert to fraction form
    11,693.38/16,136.87 = 6,388.18/x
  3. Step 3: Cross multiply
    11,693.38x = 16,136.87 × 6,388.18
  4. Step 4: Simplify right side
    11,693.38x = 103,085,117.57
  5. Step 5: Solve for x
    x = 103,085,117.57/11,693.38
  6. Step 6: Final answer
    x = 8,815.69

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Half scale
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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.