Home / 18,137.11-25,031.01-12,181.18

Finding the Fourth Proportional to 18,137.11, 25,031.01 and 12,181.18

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Solution

The fourth proportional to 18,137.11, 25,031.01 and 12,181.18 is: 16,811.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.11 : 25,031.01 = 12,181.18 : x
  2. Step 2: Convert to fraction form
    18,137.11/25,031.01 = 12,181.18/x
  3. Step 3: Cross multiply
    18,137.11x = 25,031.01 × 12,181.18
  4. Step 4: Simplify right side
    18,137.11x = 304,907,238.39
  5. Step 5: Solve for x
    x = 304,907,238.39/18,137.11
  6. Step 6: Final answer
    x = 16,811.24

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Double scale
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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.