Home / 10,864.11-14,991.44-8,631.39

Finding the Fourth Proportional to 10,864.11, 14,991.44 and 8,631.39

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Solution

The fourth proportional to 10,864.11, 14,991.44 and 8,631.39 is: 11,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.11 : 14,991.44 = 8,631.39 : x
  2. Step 2: Convert to fraction form
    10,864.11/14,991.44 = 8,631.39/x
  3. Step 3: Cross multiply
    10,864.11x = 14,991.44 × 8,631.39
  4. Step 4: Simplify right side
    10,864.11x = 129,396,922.14
  5. Step 5: Solve for x
    x = 129,396,922.14/10,864.11
  6. Step 6: Final answer
    x = 11,910.49

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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.