Home / 25,620.20-38,516.70-21,818.60

Finding the Fourth Proportional to 25,620.20, 38,516.70 and 21,818.60

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Solution

The fourth proportional to 25,620.20, 38,516.70 and 21,818.60 is: 32,801.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,620.20 : 38,516.70 = 21,818.60 : x
  2. Step 2: Convert to fraction form
    25,620.20/38,516.70 = 21,818.60/x
  3. Step 3: Cross multiply
    25,620.20x = 38,516.70 × 21,818.60
  4. Step 4: Simplify right side
    25,620.20x = 840,380,470.62
  5. Step 5: Solve for x
    x = 840,380,470.62/25,620.20
  6. Step 6: Final answer
    x = 32,801.48

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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.