Home / 12,237.94-18,338.22-9,102.78

Finding the Fourth Proportional to 12,237.94, 18,338.22 and 9,102.78

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Solution

The fourth proportional to 12,237.94, 18,338.22 and 9,102.78 is: 13,640.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.94 : 18,338.22 = 9,102.78 : x
  2. Step 2: Convert to fraction form
    12,237.94/18,338.22 = 9,102.78/x
  3. Step 3: Cross multiply
    12,237.94x = 18,338.22 × 9,102.78
  4. Step 4: Simplify right side
    12,237.94x = 166,928,736.74
  5. Step 5: Solve for x
    x = 166,928,736.74/12,237.94
  6. Step 6: Final answer
    x = 13,640.27

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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.