Home / 20,847.92-28,770.66-11,416.48

Finding the Fourth Proportional to 20,847.92, 28,770.66 and 11,416.48

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Solution

The fourth proportional to 20,847.92, 28,770.66 and 11,416.48 is: 15,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.92 : 28,770.66 = 11,416.48 : x
  2. Step 2: Convert to fraction form
    20,847.92/28,770.66 = 11,416.48/x
  3. Step 3: Cross multiply
    20,847.92x = 28,770.66 × 11,416.48
  4. Step 4: Simplify right side
    20,847.92x = 328,459,664.48
  5. Step 5: Solve for x
    x = 328,459,664.48/20,847.92
  6. Step 6: Final answer
    x = 15,755.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.