Home / 18,529.71-27,798.35-5,381.79

Finding the Fourth Proportional to 18,529.71, 27,798.35 and 5,381.79

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Solution

The fourth proportional to 18,529.71, 27,798.35 and 5,381.79 is: 8,073.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,529.71 : 27,798.35 = 5,381.79 : x
  2. Step 2: Convert to fraction form
    18,529.71/27,798.35 = 5,381.79/x
  3. Step 3: Cross multiply
    18,529.71x = 27,798.35 × 5,381.79
  4. Step 4: Simplify right side
    18,529.71x = 149,604,855.14
  5. Step 5: Solve for x
    x = 149,604,855.14/18,529.71
  6. Step 6: Final answer
    x = 8,073.78

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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.