Home / 19,912.05-27,479.12-10,958.72

Finding the Fourth Proportional to 19,912.05, 27,479.12 and 10,958.72

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Solution

The fourth proportional to 19,912.05, 27,479.12 and 10,958.72 is: 15,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.05 : 27,479.12 = 10,958.72 : x
  2. Step 2: Convert to fraction form
    19,912.05/27,479.12 = 10,958.72/x
  3. Step 3: Cross multiply
    19,912.05x = 27,479.12 × 10,958.72
  4. Step 4: Simplify right side
    19,912.05x = 301,135,789.74
  5. Step 5: Solve for x
    x = 301,135,789.74/19,912.05
  6. Step 6: Final answer
    x = 15,123.29

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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.