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Finding the Fourth Proportional to 11,778.51, 16,255.05 and 7,792.65

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Solution

The fourth proportional to 11,778.51, 16,255.05 and 7,792.65 is: 10,754.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778.51 : 16,255.05 = 7,792.65 : x
  2. Step 2: Convert to fraction form
    11,778.51/16,255.05 = 7,792.65/x
  3. Step 3: Cross multiply
    11,778.51x = 16,255.05 × 7,792.65
  4. Step 4: Simplify right side
    11,778.51x = 126,669,915.38
  5. Step 5: Solve for x
    x = 126,669,915.38/11,778.51
  6. Step 6: Final answer
    x = 10,754.32

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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.