Home / 39,040.20-53,874.83-21,135.05

Finding the Fourth Proportional to 39,040.20, 53,874.83 and 21,135.05

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Solution

The fourth proportional to 39,040.20, 53,874.83 and 21,135.05 is: 29,166.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.20 : 53,874.83 = 21,135.05 : x
  2. Step 2: Convert to fraction form
    39,040.20/53,874.83 = 21,135.05/x
  3. Step 3: Cross multiply
    39,040.20x = 53,874.83 × 21,135.05
  4. Step 4: Simplify right side
    39,040.20x = 1,138,647,211.29
  5. Step 5: Solve for x
    x = 1,138,647,211.29/39,040.20
  6. Step 6: Final answer
    x = 29,166.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.