Home / 39,162.13-54,043.79-21,257.12

Finding the Fourth Proportional to 39,162.13, 54,043.79 and 21,257.12

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Solution

The fourth proportional to 39,162.13, 54,043.79 and 21,257.12 is: 29,334.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,162.13 : 54,043.79 = 21,257.12 : x
  2. Step 2: Convert to fraction form
    39,162.13/54,043.79 = 21,257.12/x
  3. Step 3: Cross multiply
    39,162.13x = 54,043.79 × 21,257.12
  4. Step 4: Simplify right side
    39,162.13x = 1,148,815,358.11
  5. Step 5: Solve for x
    x = 1,148,815,358.11/39,162.13
  6. Step 6: Final answer
    x = 29,334.86

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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.