Home / 12,236.94-18,336.72-9,101.78

Finding the Fourth Proportional to 12,236.94, 18,336.72 and 9,101.78

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Solution

The fourth proportional to 12,236.94, 18,336.72 and 9,101.78 is: 13,638.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.94 : 18,336.72 = 9,101.78 : x
  2. Step 2: Convert to fraction form
    12,236.94/18,336.72 = 9,101.78/x
  3. Step 3: Cross multiply
    12,236.94x = 18,336.72 × 9,101.78
  4. Step 4: Simplify right side
    12,236.94x = 166,896,768.61
  5. Step 5: Solve for x
    x = 166,896,768.61/12,236.94
  6. Step 6: Final answer
    x = 13,638.77

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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.