Home / 39,707.73-54,796.78-21,803.90

Finding the Fourth Proportional to 39,707.73, 54,796.78 and 21,803.90

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Solution

The fourth proportional to 39,707.73, 54,796.78 and 21,803.90 is: 30,089.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,707.73 : 54,796.78 = 21,803.90 : x
  2. Step 2: Convert to fraction form
    39,707.73/54,796.78 = 21,803.90/x
  3. Step 3: Cross multiply
    39,707.73x = 54,796.78 × 21,803.90
  4. Step 4: Simplify right side
    39,707.73x = 1,194,783,511.44
  5. Step 5: Solve for x
    x = 1,194,783,511.44/39,707.73
  6. Step 6: Final answer
    x = 30,089.44

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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.