Home / 20,738.72-31,081.20-10,852.96

Finding the Fourth Proportional to 20,738.72, 31,081.20 and 10,852.96

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Solution

The fourth proportional to 20,738.72, 31,081.20 and 10,852.96 is: 16,265.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.72 : 31,081.20 = 10,852.96 : x
  2. Step 2: Convert to fraction form
    20,738.72/31,081.20 = 10,852.96/x
  3. Step 3: Cross multiply
    20,738.72x = 31,081.20 × 10,852.96
  4. Step 4: Simplify right side
    20,738.72x = 337,323,020.35
  5. Step 5: Solve for x
    x = 337,323,020.35/20,738.72
  6. Step 6: Final answer
    x = 16,265.37

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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.