Home / 11,426.06-15,769.43-6,390.56

Finding the Fourth Proportional to 11,426.06, 15,769.43 and 6,390.56

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Solution

The fourth proportional to 11,426.06, 15,769.43 and 6,390.56 is: 8,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.06 : 15,769.43 = 6,390.56 : x
  2. Step 2: Convert to fraction form
    11,426.06/15,769.43 = 6,390.56/x
  3. Step 3: Cross multiply
    11,426.06x = 15,769.43 × 6,390.56
  4. Step 4: Simplify right side
    11,426.06x = 100,775,488.58
  5. Step 5: Solve for x
    x = 100,775,488.58/11,426.06
  6. Step 6: Final answer
    x = 8,819.79

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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.