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Finding the Fourth Proportional to 10,918.69, 15,067.80 and 5,950.69

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Solution

The fourth proportional to 10,918.69, 15,067.80 and 5,950.69 is: 8,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.69 : 15,067.80 = 5,950.69 : x
  2. Step 2: Convert to fraction form
    10,918.69/15,067.80 = 5,950.69/x
  3. Step 3: Cross multiply
    10,918.69x = 15,067.80 × 5,950.69
  4. Step 4: Simplify right side
    10,918.69x = 89,663,769.11
  5. Step 5: Solve for x
    x = 89,663,769.11/10,918.69
  6. Step 6: Final answer
    x = 8,211.95

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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.