Home / 20,893.11-31,340.52-5,311.14

Finding the Fourth Proportional to 20,893.11, 31,340.52 and 5,311.14

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Solution

The fourth proportional to 20,893.11, 31,340.52 and 5,311.14 is: 7,966.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.11 : 31,340.52 = 5,311.14 : x
  2. Step 2: Convert to fraction form
    20,893.11/31,340.52 = 5,311.14/x
  3. Step 3: Cross multiply
    20,893.11x = 31,340.52 × 5,311.14
  4. Step 4: Simplify right side
    20,893.11x = 166,453,889.39
  5. Step 5: Solve for x
    x = 166,453,889.39/20,893.11
  6. Step 6: Final answer
    x = 7,966.93

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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.