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Finding the Fourth Proportional to 18,137.74, 25,040.50 and 12,086.38

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Solution

The fourth proportional to 18,137.74, 25,040.50 and 12,086.38 is: 16,686.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.74 : 25,040.50 = 12,086.38 : x
  2. Step 2: Convert to fraction form
    18,137.74/25,040.50 = 12,086.38/x
  3. Step 3: Cross multiply
    18,137.74x = 25,040.50 × 12,086.38
  4. Step 4: Simplify right side
    18,137.74x = 302,648,998.39
  5. Step 5: Solve for x
    x = 302,648,998.39/18,137.74
  6. Step 6: Final answer
    x = 16,686.15

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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.