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Finding the Fourth Proportional to 10,940.90, 15,098.09 and 6,161.09

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Solution

The fourth proportional to 10,940.90, 15,098.09 and 6,161.09 is: 8,502.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.90 : 15,098.09 = 6,161.09 : x
  2. Step 2: Convert to fraction form
    10,940.90/15,098.09 = 6,161.09/x
  3. Step 3: Cross multiply
    10,940.90x = 15,098.09 × 6,161.09
  4. Step 4: Simplify right side
    10,940.90x = 93,020,744.47
  5. Step 5: Solve for x
    x = 93,020,744.47/10,940.90
  6. Step 6: Final answer
    x = 8,502.11

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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.