Home / 39,774.22-54,888.97-21,869.98

Finding the Fourth Proportional to 39,774.22, 54,888.97 and 21,869.98

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Solution

The fourth proportional to 39,774.22, 54,888.97 and 21,869.98 is: 30,180.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,774.22 : 54,888.97 = 21,869.98 : x
  2. Step 2: Convert to fraction form
    39,774.22/54,888.97 = 21,869.98/x
  3. Step 3: Cross multiply
    39,774.22x = 54,888.97 × 21,869.98
  4. Step 4: Simplify right side
    39,774.22x = 1,200,420,676.12
  5. Step 5: Solve for x
    x = 1,200,420,676.12/39,774.22
  6. Step 6: Final answer
    x = 30,180.87

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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.