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Finding the Fourth Proportional to 18,898.26, 26,079.60 and 10,940.90

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Solution

The fourth proportional to 18,898.26, 26,079.60 and 10,940.90 is: 15,098.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.26 : 26,079.60 = 10,940.90 : x
  2. Step 2: Convert to fraction form
    18,898.26/26,079.60 = 10,940.90/x
  3. Step 3: Cross multiply
    18,898.26x = 26,079.60 × 10,940.90
  4. Step 4: Simplify right side
    18,898.26x = 285,334,295.64
  5. Step 5: Solve for x
    x = 285,334,295.64/18,898.26
  6. Step 6: Final answer
    x = 15,098.44

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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.