Home / 20,774.35-31,161.57-8,295.39

Finding the Fourth Proportional to 20,774.35, 31,161.57 and 8,295.39

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Solution

The fourth proportional to 20,774.35, 31,161.57 and 8,295.39 is: 12,443.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.35 : 31,161.57 = 8,295.39 : x
  2. Step 2: Convert to fraction form
    20,774.35/31,161.57 = 8,295.39/x
  3. Step 3: Cross multiply
    20,774.35x = 31,161.57 × 8,295.39
  4. Step 4: Simplify right side
    20,774.35x = 258,497,376.16
  5. Step 5: Solve for x
    x = 258,497,376.16/20,774.35
  6. Step 6: Final answer
    x = 12,443.10

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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.