Home / 18,981.71-26,198.19-11,325.48

Finding the Fourth Proportional to 18,981.71, 26,198.19 and 11,325.48

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Solution

The fourth proportional to 18,981.71, 26,198.19 and 11,325.48 is: 15,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.71 : 26,198.19 = 11,325.48 : x
  2. Step 2: Convert to fraction form
    18,981.71/26,198.19 = 11,325.48/x
  3. Step 3: Cross multiply
    18,981.71x = 26,198.19 × 11,325.48
  4. Step 4: Simplify right side
    18,981.71x = 296,707,076.88
  5. Step 5: Solve for x
    x = 296,707,076.88/18,981.71
  6. Step 6: Final answer
    x = 15,631.21

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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.