Home / 20,339.70-30,497.38-8,479.17

Finding the Fourth Proportional to 20,339.70, 30,497.38 and 8,479.17

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Solution

The fourth proportional to 20,339.70, 30,497.38 and 8,479.17 is: 12,713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.70 : 30,497.38 = 8,479.17 : x
  2. Step 2: Convert to fraction form
    20,339.70/30,497.38 = 8,479.17/x
  3. Step 3: Cross multiply
    20,339.70x = 30,497.38 × 8,479.17
  4. Step 4: Simplify right side
    20,339.70x = 258,592,469.57
  5. Step 5: Solve for x
    x = 258,592,469.57/20,339.70
  6. Step 6: Final answer
    x = 12,713.68

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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.