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Finding the Fourth Proportional to 11,039.85, 15,238.42 and 6,792.21

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Solution

The fourth proportional to 11,039.85, 15,238.42 and 6,792.21 is: 9,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,039.85 : 15,238.42 = 6,792.21 : x
  2. Step 2: Convert to fraction form
    11,039.85/15,238.42 = 6,792.21/x
  3. Step 3: Cross multiply
    11,039.85x = 15,238.42 × 6,792.21
  4. Step 4: Simplify right side
    11,039.85x = 103,502,531.73
  5. Step 5: Solve for x
    x = 103,502,531.73/11,039.85
  6. Step 6: Final answer
    x = 9,375.36

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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.