Home / 13,823.38-19,078.10-7,856.97

Finding the Fourth Proportional to 13,823.38, 19,078.10 and 7,856.97

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Solution

The fourth proportional to 13,823.38, 19,078.10 and 7,856.97 is: 10,843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.38 : 19,078.10 = 7,856.97 : x
  2. Step 2: Convert to fraction form
    13,823.38/19,078.10 = 7,856.97/x
  3. Step 3: Cross multiply
    13,823.38x = 19,078.10 × 7,856.97
  4. Step 4: Simplify right side
    13,823.38x = 149,895,924.68
  5. Step 5: Solve for x
    x = 149,895,924.68/13,823.38
  6. Step 6: Final answer
    x = 10,843.65

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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.