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Finding the Fourth Proportional to 18,669, 25,763.22 and 10,286.04

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Solution

The fourth proportional to 18,669, 25,763.22 and 10,286.04 is: 14,194.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669 : 25,763.22 = 10,286.04 : x
  2. Step 2: Convert to fraction form
    18,669/25,763.22 = 10,286.04/x
  3. Step 3: Cross multiply
    18,669x = 25,763.22 × 10,286.04
  4. Step 4: Simplify right side
    18,669x = 265,001,511.45
  5. Step 5: Solve for x
    x = 265,001,511.45/18,669
  6. Step 6: Final answer
    x = 14,194.74

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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.