Home / 26,220.20-36,143.46-20,906.60

Finding the Fourth Proportional to 26,220.20, 36,143.46 and 20,906.60

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Solution

The fourth proportional to 26,220.20, 36,143.46 and 20,906.60 is: 28,818.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,220.20 : 36,143.46 = 20,906.60 : x
  2. Step 2: Convert to fraction form
    26,220.20/36,143.46 = 20,906.60/x
  3. Step 3: Cross multiply
    26,220.20x = 36,143.46 × 20,906.60
  4. Step 4: Simplify right side
    26,220.20x = 755,636,860.84
  5. Step 5: Solve for x
    x = 755,636,860.84/26,220.20
  6. Step 6: Final answer
    x = 28,818.88

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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.