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Finding the Fourth Proportional to 10,672.20, 16,007.94 and 7,187.22

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Solution

The fourth proportional to 10,672.20, 16,007.94 and 7,187.22 is: 10,780.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,672.20 : 16,007.94 = 7,187.22 : x
  2. Step 2: Convert to fraction form
    10,672.20/16,007.94 = 7,187.22/x
  3. Step 3: Cross multiply
    10,672.20x = 16,007.94 × 7,187.22
  4. Step 4: Simplify right side
    10,672.20x = 115,052,586.53
  5. Step 5: Solve for x
    x = 115,052,586.53/10,672.20
  6. Step 6: Final answer
    x = 10,780.59

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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.