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Finding the Fourth Proportional to 18,230.80, 25,540.40 and 18,230.80

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Solution

The fourth proportional to 18,230.80, 25,540.40 and 18,230.80 is: 25,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,230.80 : 25,540.40 = 18,230.80 : x
  2. Step 2: Convert to fraction form
    18,230.80/25,540.40 = 18,230.80/x
  3. Step 3: Cross multiply
    18,230.80x = 25,540.40 × 18,230.80
  4. Step 4: Simplify right side
    18,230.80x = 465,621,924.32
  5. Step 5: Solve for x
    x = 465,621,924.32/18,230.80
  6. Step 6: Final answer
    x = 25,540.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.