Home / 20,515.96-30,761.63-9,408.73

Finding the Fourth Proportional to 20,515.96, 30,761.63 and 9,408.73

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Solution

The fourth proportional to 20,515.96, 30,761.63 and 9,408.73 is: 14,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.96 : 30,761.63 = 9,408.73 : x
  2. Step 2: Convert to fraction form
    20,515.96/30,761.63 = 9,408.73/x
  3. Step 3: Cross multiply
    20,515.96x = 30,761.63 × 9,408.73
  4. Step 4: Simplify right side
    20,515.96x = 289,427,871.03
  5. Step 5: Solve for x
    x = 289,427,871.03/20,515.96
  6. Step 6: Final answer
    x = 14,107.45

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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.