Home / 18,140.78-27,218.97-9,381.84

Finding the Fourth Proportional to 18,140.78, 27,218.97 and 9,381.84

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Solution

The fourth proportional to 18,140.78, 27,218.97 and 9,381.84 is: 14,076.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.78 : 27,218.97 = 9,381.84 : x
  2. Step 2: Convert to fraction form
    18,140.78/27,218.97 = 9,381.84/x
  3. Step 3: Cross multiply
    18,140.78x = 27,218.97 × 9,381.84
  4. Step 4: Simplify right side
    18,140.78x = 255,364,021.50
  5. Step 5: Solve for x
    x = 255,364,021.50/18,140.78
  6. Step 6: Final answer
    x = 14,076.79

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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.