Home / 39,162.70-54,044.34-21,257.56

Finding the Fourth Proportional to 39,162.70, 54,044.34 and 21,257.56

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Solution

The fourth proportional to 39,162.70, 54,044.34 and 21,257.56 is: 29,335.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,162.70 : 54,044.34 = 21,257.56 : x
  2. Step 2: Convert to fraction form
    39,162.70/54,044.34 = 21,257.56/x
  3. Step 3: Cross multiply
    39,162.70x = 54,044.34 × 21,257.56
  4. Step 4: Simplify right side
    39,162.70x = 1,148,850,800.21
  5. Step 5: Solve for x
    x = 1,148,850,800.21/39,162.70
  6. Step 6: Final answer
    x = 29,335.33

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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.