Home / 18,330.79-27,487.99-5,180.09

Finding the Fourth Proportional to 18,330.79, 27,487.99 and 5,180.09

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Solution

The fourth proportional to 18,330.79, 27,487.99 and 5,180.09 is: 7,767.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,330.79 : 27,487.99 = 5,180.09 : x
  2. Step 2: Convert to fraction form
    18,330.79/27,487.99 = 5,180.09/x
  3. Step 3: Cross multiply
    18,330.79x = 27,487.99 × 5,180.09
  4. Step 4: Simplify right side
    18,330.79x = 142,390,262.12
  5. Step 5: Solve for x
    x = 142,390,262.12/18,330.79
  6. Step 6: Final answer
    x = 7,767.82

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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.