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Finding the Fourth Proportional to 15,104.10, 20,843.80 and 8,815.26

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Solution

The fourth proportional to 15,104.10, 20,843.80 and 8,815.26 is: 12,165.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104.10 : 20,843.80 = 8,815.26 : x
  2. Step 2: Convert to fraction form
    15,104.10/20,843.80 = 8,815.26/x
  3. Step 3: Cross multiply
    15,104.10x = 20,843.80 × 8,815.26
  4. Step 4: Simplify right side
    15,104.10x = 183,743,516.39
  5. Step 5: Solve for x
    x = 183,743,516.39/15,104.10
  6. Step 6: Final answer
    x = 12,165.14

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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.