Home / 20,910.92-31,366.32-5,328.44

Finding the Fourth Proportional to 20,910.92, 31,366.32 and 5,328.44

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Solution

The fourth proportional to 20,910.92, 31,366.32 and 5,328.44 is: 7,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.92 : 31,366.32 = 5,328.44 : x
  2. Step 2: Convert to fraction form
    20,910.92/31,366.32 = 5,328.44/x
  3. Step 3: Cross multiply
    20,910.92x = 31,366.32 × 5,328.44
  4. Step 4: Simplify right side
    20,910.92x = 167,133,554.14
  5. Step 5: Solve for x
    x = 167,133,554.14/20,910.92
  6. Step 6: Final answer
    x = 7,992.64

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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.