Home / 25,640.15-38,460.22-20,478.83

Finding the Fourth Proportional to 25,640.15, 38,460.22 and 20,478.83

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Solution

The fourth proportional to 25,640.15, 38,460.22 and 20,478.83 is: 30,718.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,640.15 : 38,460.22 = 20,478.83 : x
  2. Step 2: Convert to fraction form
    25,640.15/38,460.22 = 20,478.83/x
  3. Step 3: Cross multiply
    25,640.15x = 38,460.22 × 20,478.83
  4. Step 4: Simplify right side
    25,640.15x = 787,620,063.64
  5. Step 5: Solve for x
    x = 787,620,063.64/25,640.15
  6. Step 6: Final answer
    x = 30,718.24

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.