Home / 39,757.36-54,865.72-21,854.02

Finding the Fourth Proportional to 39,757.36, 54,865.72 and 21,854.02

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Solution

The fourth proportional to 39,757.36, 54,865.72 and 21,854.02 is: 30,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,757.36 : 54,865.72 = 21,854.02 : x
  2. Step 2: Convert to fraction form
    39,757.36/54,865.72 = 21,854.02/x
  3. Step 3: Cross multiply
    39,757.36x = 54,865.72 × 21,854.02
  4. Step 4: Simplify right side
    39,757.36x = 1,199,036,542.19
  5. Step 5: Solve for x
    x = 1,199,036,542.19/39,757.36
  6. Step 6: Final answer
    x = 30,158.86

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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.