Home / 39,385.14-54,352.42-21,481.81

Finding the Fourth Proportional to 39,385.14, 54,352.42 and 21,481.81

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Solution

The fourth proportional to 39,385.14, 54,352.42 and 21,481.81 is: 29,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,385.14 : 54,352.42 = 21,481.81 : x
  2. Step 2: Convert to fraction form
    39,385.14/54,352.42 = 21,481.81/x
  3. Step 3: Cross multiply
    39,385.14x = 54,352.42 × 21,481.81
  4. Step 4: Simplify right side
    39,385.14x = 1,167,588,169.89
  5. Step 5: Solve for x
    x = 1,167,588,169.89/39,385.14
  6. Step 6: Final answer
    x = 29,645.40

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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.