Home / 26,840.90-36,979.49-20,770.27

Finding the Fourth Proportional to 26,840.90, 36,979.49 and 20,770.27

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Solution

The fourth proportional to 26,840.90, 36,979.49 and 20,770.27 is: 28,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,840.90 : 36,979.49 = 20,770.27 : x
  2. Step 2: Convert to fraction form
    26,840.90/36,979.49 = 20,770.27/x
  3. Step 3: Cross multiply
    26,840.90x = 36,979.49 × 20,770.27
  4. Step 4: Simplify right side
    26,840.90x = 768,073,819.85
  5. Step 5: Solve for x
    x = 768,073,819.85/26,840.90
  6. Step 6: Final answer
    x = 28,615.80

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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.