Home / 18,121.11-27,161.20-9,782.56

Finding the Fourth Proportional to 18,121.11, 27,161.20 and 9,782.56

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Solution

The fourth proportional to 18,121.11, 27,161.20 and 9,782.56 is: 14,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.11 : 27,161.20 = 9,782.56 : x
  2. Step 2: Convert to fraction form
    18,121.11/27,161.20 = 9,782.56/x
  3. Step 3: Cross multiply
    18,121.11x = 27,161.20 × 9,782.56
  4. Step 4: Simplify right side
    18,121.11x = 265,706,068.67
  5. Step 5: Solve for x
    x = 265,706,068.67/18,121.11
  6. Step 6: Final answer
    x = 14,662.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.