Home / 20,775.18-31,159.62-6,733.38

Finding the Fourth Proportional to 20,775.18, 31,159.62 and 6,733.38

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Solution

The fourth proportional to 20,775.18, 31,159.62 and 6,733.38 is: 10,099.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.18 : 31,159.62 = 6,733.38 : x
  2. Step 2: Convert to fraction form
    20,775.18/31,159.62 = 6,733.38/x
  3. Step 3: Cross multiply
    20,775.18x = 31,159.62 × 6,733.38
  4. Step 4: Simplify right side
    20,775.18x = 209,809,562.12
  5. Step 5: Solve for x
    x = 209,809,562.12/20,775.18
  6. Step 6: Final answer
    x = 10,099.05

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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.