Home / 39,609.78-54,660.99-21,704.52

Finding the Fourth Proportional to 39,609.78, 54,660.99 and 21,704.52

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Solution

The fourth proportional to 39,609.78, 54,660.99 and 21,704.52 is: 29,951.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,609.78 : 54,660.99 = 21,704.52 : x
  2. Step 2: Convert to fraction form
    39,609.78/54,660.99 = 21,704.52/x
  3. Step 3: Cross multiply
    39,609.78x = 54,660.99 × 21,704.52
  4. Step 4: Simplify right side
    39,609.78x = 1,186,390,550.67
  5. Step 5: Solve for x
    x = 1,186,390,550.67/39,609.78
  6. Step 6: Final answer
    x = 29,951.96

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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.