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Finding the Fourth Proportional to 18,699.22, 25,914.10 and 18,344.39

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Solution

The fourth proportional to 18,699.22, 25,914.10 and 18,344.39 is: 25,422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.22 : 25,914.10 = 18,344.39 : x
  2. Step 2: Convert to fraction form
    18,699.22/25,914.10 = 18,344.39/x
  3. Step 3: Cross multiply
    18,699.22x = 25,914.10 × 18,344.39
  4. Step 4: Simplify right side
    18,699.22x = 475,378,410.22
  5. Step 5: Solve for x
    x = 475,378,410.22/18,699.22
  6. Step 6: Final answer
    x = 25,422.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.