Home / 39,165.40-54,046.66-21,259.72

Finding the Fourth Proportional to 39,165.40, 54,046.66 and 21,259.72

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Solution

The fourth proportional to 39,165.40, 54,046.66 and 21,259.72 is: 29,337.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,165.40 : 54,046.66 = 21,259.72 : x
  2. Step 2: Convert to fraction form
    39,165.40/54,046.66 = 21,259.72/x
  3. Step 3: Cross multiply
    39,165.40x = 54,046.66 × 21,259.72
  4. Step 4: Simplify right side
    39,165.40x = 1,149,016,858.54
  5. Step 5: Solve for x
    x = 1,149,016,858.54/39,165.40
  6. Step 6: Final answer
    x = 29,337.55

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1.5x scale

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.