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Finding the Fourth Proportional to 18,430.13, 27,620.49 and 17,249.15

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Solution

The fourth proportional to 18,430.13, 27,620.49 and 17,249.15 is: 25,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.13 : 27,620.49 = 17,249.15 : x
  2. Step 2: Convert to fraction form
    18,430.13/27,620.49 = 17,249.15/x
  3. Step 3: Cross multiply
    18,430.13x = 27,620.49 × 17,249.15
  4. Step 4: Simplify right side
    18,430.13x = 476,429,975.08
  5. Step 5: Solve for x
    x = 476,429,975.08/18,430.13
  6. Step 6: Final answer
    x = 25,850.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.