Home / 18,795.78-28,192.66-6,315.90

Finding the Fourth Proportional to 18,795.78, 28,192.66 and 6,315.90

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Solution

The fourth proportional to 18,795.78, 28,192.66 and 6,315.90 is: 9,473.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.78 : 28,192.66 = 6,315.90 : x
  2. Step 2: Convert to fraction form
    18,795.78/28,192.66 = 6,315.90/x
  3. Step 3: Cross multiply
    18,795.78x = 28,192.66 × 6,315.90
  4. Step 4: Simplify right side
    18,795.78x = 178,062,021.29
  5. Step 5: Solve for x
    x = 178,062,021.29/18,795.78
  6. Step 6: Final answer
    x = 9,473.51

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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.