Home / 20,852.92-31,326.42-12,109.24

Finding the Fourth Proportional to 20,852.92, 31,326.42 and 12,109.24

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Solution

The fourth proportional to 20,852.92, 31,326.42 and 12,109.24 is: 18,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.92 : 31,326.42 = 12,109.24 : x
  2. Step 2: Convert to fraction form
    20,852.92/31,326.42 = 12,109.24/x
  3. Step 3: Cross multiply
    20,852.92x = 31,326.42 × 12,109.24
  4. Step 4: Simplify right side
    20,852.92x = 379,339,138.12
  5. Step 5: Solve for x
    x = 379,339,138.12/20,852.92
  6. Step 6: Final answer
    x = 18,191.18

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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.