Home / 20,279.62-30,390.27-8,576.74

Finding the Fourth Proportional to 20,279.62, 30,390.27 and 8,576.74

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Solution

The fourth proportional to 20,279.62, 30,390.27 and 8,576.74 is: 12,852.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.62 : 30,390.27 = 8,576.74 : x
  2. Step 2: Convert to fraction form
    20,279.62/30,390.27 = 8,576.74/x
  3. Step 3: Cross multiply
    20,279.62x = 30,390.27 × 8,576.74
  4. Step 4: Simplify right side
    20,279.62x = 260,649,444.32
  5. Step 5: Solve for x
    x = 260,649,444.32/20,279.62
  6. Step 6: Final answer
    x = 12,852.78

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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.