Home / 23,178.92-31,984.89-13,107.78

Finding the Fourth Proportional to 23,178.92, 31,984.89 and 13,107.78

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Solution

The fourth proportional to 23,178.92, 31,984.89 and 13,107.78 is: 18,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,178.92 : 31,984.89 = 13,107.78 : x
  2. Step 2: Convert to fraction form
    23,178.92/31,984.89 = 13,107.78/x
  3. Step 3: Cross multiply
    23,178.92x = 31,984.89 × 13,107.78
  4. Step 4: Simplify right side
    23,178.92x = 419,250,901.44
  5. Step 5: Solve for x
    x = 419,250,901.44/23,178.92
  6. Step 6: Final answer
    x = 18,087.60

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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.