Home / 20,893.19-31,339.86-5,310.82

Finding the Fourth Proportional to 20,893.19, 31,339.86 and 5,310.82

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Solution

The fourth proportional to 20,893.19, 31,339.86 and 5,310.82 is: 7,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.19 : 31,339.86 = 5,310.82 : x
  2. Step 2: Convert to fraction form
    20,893.19/31,339.86 = 5,310.82/x
  3. Step 3: Cross multiply
    20,893.19x = 31,339.86 × 5,310.82
  4. Step 4: Simplify right side
    20,893.19x = 166,440,257.02
  5. Step 5: Solve for x
    x = 166,440,257.02/20,893.19
  6. Step 6: Final answer
    x = 7,966.24

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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.