Home / 12,292.21-18,438.42-3,972.22

Finding the Fourth Proportional to 12,292.21, 18,438.42 and 3,972.22

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Solution

The fourth proportional to 12,292.21, 18,438.42 and 3,972.22 is: 5,958.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,292.21 : 18,438.42 = 3,972.22 : x
  2. Step 2: Convert to fraction form
    12,292.21/18,438.42 = 3,972.22/x
  3. Step 3: Cross multiply
    12,292.21x = 18,438.42 × 3,972.22
  4. Step 4: Simplify right side
    12,292.21x = 73,241,440.83
  5. Step 5: Solve for x
    x = 73,241,440.83/12,292.21
  6. Step 6: Final answer
    x = 5,958.36

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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.