Home / 18,208.72-25,135.78-12,243.84

Finding the Fourth Proportional to 18,208.72, 25,135.78 and 12,243.84

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Solution

The fourth proportional to 18,208.72, 25,135.78 and 12,243.84 is: 16,901.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,208.72 : 25,135.78 = 12,243.84 : x
  2. Step 2: Convert to fraction form
    18,208.72/25,135.78 = 12,243.84/x
  3. Step 3: Cross multiply
    18,208.72x = 25,135.78 × 12,243.84
  4. Step 4: Simplify right side
    18,208.72x = 307,758,468.60
  5. Step 5: Solve for x
    x = 307,758,468.60/18,208.72
  6. Step 6: Final answer
    x = 16,901.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.