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Finding the Fourth Proportional to 11,950.70, 16,491.89 and 6,645.51

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Solution

The fourth proportional to 11,950.70, 16,491.89 and 6,645.51 is: 9,170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,950.70 : 16,491.89 = 6,645.51 : x
  2. Step 2: Convert to fraction form
    11,950.70/16,491.89 = 6,645.51/x
  3. Step 3: Cross multiply
    11,950.70x = 16,491.89 × 6,645.51
  4. Step 4: Simplify right side
    11,950.70x = 109,597,036.53
  5. Step 5: Solve for x
    x = 109,597,036.53/11,950.70
  6. Step 6: Final answer
    x = 9,170.77

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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.