Home / 20,684.83-31,018.05-5,890.39

Finding the Fourth Proportional to 20,684.83, 31,018.05 and 5,890.39

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Solution

The fourth proportional to 20,684.83, 31,018.05 and 5,890.39 is: 8,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.83 : 31,018.05 = 5,890.39 : x
  2. Step 2: Convert to fraction form
    20,684.83/31,018.05 = 5,890.39/x
  3. Step 3: Cross multiply
    20,684.83x = 31,018.05 × 5,890.39
  4. Step 4: Simplify right side
    20,684.83x = 182,708,411.54
  5. Step 5: Solve for x
    x = 182,708,411.54/20,684.83
  6. Step 6: Final answer
    x = 8,832.97

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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.