Home / 12,270.28-18,408.36-3,951.08

Finding the Fourth Proportional to 12,270.28, 18,408.36 and 3,951.08

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Solution

The fourth proportional to 12,270.28, 18,408.36 and 3,951.08 is: 5,927.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.28 : 18,408.36 = 3,951.08 : x
  2. Step 2: Convert to fraction form
    12,270.28/18,408.36 = 3,951.08/x
  3. Step 3: Cross multiply
    12,270.28x = 18,408.36 × 3,951.08
  4. Step 4: Simplify right side
    12,270.28x = 72,732,791.23
  5. Step 5: Solve for x
    x = 72,732,791.23/12,270.28
  6. Step 6: Final answer
    x = 5,927.56

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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.