Home / 39,820.73-54,954.32-21,916.89

Finding the Fourth Proportional to 39,820.73, 54,954.32 and 21,916.89

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Solution

The fourth proportional to 39,820.73, 54,954.32 and 21,916.89 is: 30,246.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.73 : 54,954.32 = 21,916.89 : x
  2. Step 2: Convert to fraction form
    39,820.73/54,954.32 = 21,916.89/x
  3. Step 3: Cross multiply
    39,820.73x = 54,954.32 × 21,916.89
  4. Step 4: Simplify right side
    39,820.73x = 1,204,427,676.88
  5. Step 5: Solve for x
    x = 1,204,427,676.88/39,820.73
  6. Step 6: Final answer
    x = 30,246.25

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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.