Home / 18,122.66-27,180.80-4,795.78

Finding the Fourth Proportional to 18,122.66, 27,180.80 and 4,795.78

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Solution

The fourth proportional to 18,122.66, 27,180.80 and 4,795.78 is: 7,192.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.66 : 27,180.80 = 4,795.78 : x
  2. Step 2: Convert to fraction form
    18,122.66/27,180.80 = 4,795.78/x
  3. Step 3: Cross multiply
    18,122.66x = 27,180.80 × 4,795.78
  4. Step 4: Simplify right side
    18,122.66x = 130,352,977.14
  5. Step 5: Solve for x
    x = 130,352,977.14/18,122.66
  6. Step 6: Final answer
    x = 7,192.82

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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.