Home / 18,529.20-27,792.96-5,381.28

Finding the Fourth Proportional to 18,529.20, 27,792.96 and 5,381.28

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Solution

The fourth proportional to 18,529.20, 27,792.96 and 5,381.28 is: 8,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,529.20 : 27,792.96 = 5,381.28 : x
  2. Step 2: Convert to fraction form
    18,529.20/27,792.96 = 5,381.28/x
  3. Step 3: Cross multiply
    18,529.20x = 27,792.96 × 5,381.28
  4. Step 4: Simplify right side
    18,529.20x = 149,561,699.79
  5. Step 5: Solve for x
    x = 149,561,699.79/18,529.20
  6. Step 6: Final answer
    x = 8,071.68

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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.