Home / 39,793.88-54,916.86-21,890.26

Finding the Fourth Proportional to 39,793.88, 54,916.86 and 21,890.26

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Solution

The fourth proportional to 39,793.88, 54,916.86 and 21,890.26 is: 30,209.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,793.88 : 54,916.86 = 21,890.26 : x
  2. Step 2: Convert to fraction form
    39,793.88/54,916.86 = 21,890.26/x
  3. Step 3: Cross multiply
    39,793.88x = 54,916.86 × 21,890.26
  4. Step 4: Simplify right side
    39,793.88x = 1,202,144,343.78
  5. Step 5: Solve for x
    x = 1,202,144,343.78/39,793.88
  6. Step 6: Final answer
    x = 30,209.28

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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.