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Finding the Fourth Proportional to 26,893.76, 40,310.76 and 20,298.56

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Solution

The fourth proportional to 26,893.76, 40,310.76 and 20,298.56 is: 30,425.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,893.76 : 40,310.76 = 20,298.56 : x
  2. Step 2: Convert to fraction form
    26,893.76/40,310.76 = 20,298.56/x
  3. Step 3: Cross multiply
    26,893.76x = 40,310.76 × 20,298.56
  4. Step 4: Simplify right side
    26,893.76x = 818,250,380.51
  5. Step 5: Solve for x
    x = 818,250,380.51/26,893.76
  6. Step 6: Final answer
    x = 30,425.29

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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.