Home / 25,579.58-38,196.75-20,908.71

Finding the Fourth Proportional to 25,579.58, 38,196.75 and 20,908.71

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Solution

The fourth proportional to 25,579.58, 38,196.75 and 20,908.71 is: 31,221.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,579.58 : 38,196.75 = 20,908.71 : x
  2. Step 2: Convert to fraction form
    25,579.58/38,196.75 = 20,908.71/x
  3. Step 3: Cross multiply
    25,579.58x = 38,196.75 × 20,908.71
  4. Step 4: Simplify right side
    25,579.58x = 798,644,847.10
  5. Step 5: Solve for x
    x = 798,644,847.10/25,579.58
  6. Step 6: Final answer
    x = 31,221.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.