Home / 39,538.70-54,563.37-21,633.78

Finding the Fourth Proportional to 39,538.70, 54,563.37 and 21,633.78

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Solution

The fourth proportional to 39,538.70, 54,563.37 and 21,633.78 is: 29,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,538.70 : 54,563.37 = 21,633.78 : x
  2. Step 2: Convert to fraction form
    39,538.70/54,563.37 = 21,633.78/x
  3. Step 3: Cross multiply
    39,538.70x = 54,563.37 × 21,633.78
  4. Step 4: Simplify right side
    39,538.70x = 1,180,411,942.64
  5. Step 5: Solve for x
    x = 1,180,411,942.64/39,538.70
  6. Step 6: Final answer
    x = 29,854.60

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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.