Home / 39,361.80-54,318.02-21,456.52

Finding the Fourth Proportional to 39,361.80, 54,318.02 and 21,456.52

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Solution

The fourth proportional to 39,361.80, 54,318.02 and 21,456.52 is: 29,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,361.80 : 54,318.02 = 21,456.52 : x
  2. Step 2: Convert to fraction form
    39,361.80/54,318.02 = 21,456.52/x
  3. Step 3: Cross multiply
    39,361.80x = 54,318.02 × 21,456.52
  4. Step 4: Simplify right side
    39,361.80x = 1,165,475,682.49
  5. Step 5: Solve for x
    x = 1,165,475,682.49/39,361.80
  6. Step 6: Final answer
    x = 29,609.31

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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.