Home / 39,805.73-54,932-21,901.89

Finding the Fourth Proportional to 39,805.73, 54,932 and 21,901.89

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Solution

The fourth proportional to 39,805.73, 54,932 and 21,901.89 is: 30,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,805.73 : 54,932 = 21,901.89 : x
  2. Step 2: Convert to fraction form
    39,805.73/54,932 = 21,901.89/x
  3. Step 3: Cross multiply
    39,805.73x = 54,932 × 21,901.89
  4. Step 4: Simplify right side
    39,805.73x = 1,203,114,621.48
  5. Step 5: Solve for x
    x = 1,203,114,621.48/39,805.73
  6. Step 6: Final answer
    x = 30,224.66

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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.