Home / 13,553.92-18,790.96-13,072.78

Finding the Fourth Proportional to 13,553.92, 18,790.96 and 13,072.78

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Solution

The fourth proportional to 13,553.92, 18,790.96 and 13,072.78 is: 18,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.92 : 18,790.96 = 13,072.78 : x
  2. Step 2: Convert to fraction form
    13,553.92/18,790.96 = 13,072.78/x
  3. Step 3: Cross multiply
    13,553.92x = 18,790.96 × 13,072.78
  4. Step 4: Simplify right side
    13,553.92x = 245,650,086.07
  5. Step 5: Solve for x
    x = 245,650,086.07/13,553.92
  6. Step 6: Final answer
    x = 18,123.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.