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Finding the Fourth Proportional to 10,869.91, 16,308.11 and 6,249.67

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Solution

The fourth proportional to 10,869.91, 16,308.11 and 6,249.67 is: 9,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.91 : 16,308.11 = 6,249.67 : x
  2. Step 2: Convert to fraction form
    10,869.91/16,308.11 = 6,249.67/x
  3. Step 3: Cross multiply
    10,869.91x = 16,308.11 × 6,249.67
  4. Step 4: Simplify right side
    10,869.91x = 101,920,280.68
  5. Step 5: Solve for x
    x = 101,920,280.68/10,869.91
  6. Step 6: Final answer
    x = 9,376.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.