Home / 26,272.20-39,408.30-18,860.70

Finding the Fourth Proportional to 26,272.20, 39,408.30 and 18,860.70

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Solution

The fourth proportional to 26,272.20, 39,408.30 and 18,860.70 is: 28,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,272.20 : 39,408.30 = 18,860.70 : x
  2. Step 2: Convert to fraction form
    26,272.20/39,408.30 = 18,860.70/x
  3. Step 3: Cross multiply
    26,272.20x = 39,408.30 × 18,860.70
  4. Step 4: Simplify right side
    26,272.20x = 743,268,123.81
  5. Step 5: Solve for x
    x = 743,268,123.81/26,272.20
  6. Step 6: Final answer
    x = 28,291.05

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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.