Home / 18,138.11-25,032.39-12,182.18

Finding the Fourth Proportional to 18,138.11, 25,032.39 and 12,182.18

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Solution

The fourth proportional to 18,138.11, 25,032.39 and 12,182.18 is: 16,812.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.11 : 25,032.39 = 12,182.18 : x
  2. Step 2: Convert to fraction form
    18,138.11/25,032.39 = 12,182.18/x
  3. Step 3: Cross multiply
    18,138.11x = 25,032.39 × 12,182.18
  4. Step 4: Simplify right side
    18,138.11x = 304,949,080.81
  5. Step 5: Solve for x
    x = 304,949,080.81/18,138.11
  6. Step 6: Final answer
    x = 16,812.62

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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.