Home / 39,721.30-54,816.38-21,817.98

Finding the Fourth Proportional to 39,721.30, 54,816.38 and 21,817.98

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Solution

The fourth proportional to 39,721.30, 54,816.38 and 21,817.98 is: 30,109.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,721.30 : 54,816.38 = 21,817.98 : x
  2. Step 2: Convert to fraction form
    39,721.30/54,816.38 = 21,817.98/x
  3. Step 3: Cross multiply
    39,721.30x = 54,816.38 × 21,817.98
  4. Step 4: Simplify right side
    39,721.30x = 1,195,982,682.51
  5. Step 5: Solve for x
    x = 1,195,982,682.51/39,721.30
  6. Step 6: Final answer
    x = 30,109.35

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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.