Home / 20,261.12-30,408.96-7,957.76

Finding the Fourth Proportional to 20,261.12, 30,408.96 and 7,957.76

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Solution

The fourth proportional to 20,261.12, 30,408.96 and 7,957.76 is: 11,943.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.12 : 30,408.96 = 7,957.76 : x
  2. Step 2: Convert to fraction form
    20,261.12/30,408.96 = 7,957.76/x
  3. Step 3: Cross multiply
    20,261.12x = 30,408.96 × 7,957.76
  4. Step 4: Simplify right side
    20,261.12x = 241,987,205.53
  5. Step 5: Solve for x
    x = 241,987,205.53/20,261.12
  6. Step 6: Final answer
    x = 11,943.43

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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.