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Finding the Fourth Proportional to 18,324.98, 25,289.11 and 10,771.21

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Solution

The fourth proportional to 18,324.98, 25,289.11 and 10,771.21 is: 14,864.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,324.98 : 25,289.11 = 10,771.21 : x
  2. Step 2: Convert to fraction form
    18,324.98/25,289.11 = 10,771.21/x
  3. Step 3: Cross multiply
    18,324.98x = 25,289.11 × 10,771.21
  4. Step 4: Simplify right side
    18,324.98x = 272,394,314.52
  5. Step 5: Solve for x
    x = 272,394,314.52/18,324.98
  6. Step 6: Final answer
    x = 14,864.64

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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.