Home / 12,455.56-18,592.25-10,979.38

Finding the Fourth Proportional to 12,455.56, 18,592.25 and 10,979.38

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Solution

The fourth proportional to 12,455.56, 18,592.25 and 10,979.38 is: 16,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.56 : 18,592.25 = 10,979.38 : x
  2. Step 2: Convert to fraction form
    12,455.56/18,592.25 = 10,979.38/x
  3. Step 3: Cross multiply
    12,455.56x = 18,592.25 × 10,979.38
  4. Step 4: Simplify right side
    12,455.56x = 204,131,377.81
  5. Step 5: Solve for x
    x = 204,131,377.81/12,455.56
  6. Step 6: Final answer
    x = 16,388.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.