Home / 10,991.48-16,491.05-7,992.32

Finding the Fourth Proportional to 10,991.48, 16,491.05 and 7,992.32

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Solution

The fourth proportional to 10,991.48, 16,491.05 and 7,992.32 is: 11,991.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.48 : 16,491.05 = 7,992.32 : x
  2. Step 2: Convert to fraction form
    10,991.48/16,491.05 = 7,992.32/x
  3. Step 3: Cross multiply
    10,991.48x = 16,491.05 × 7,992.32
  4. Step 4: Simplify right side
    10,991.48x = 131,801,626.32
  5. Step 5: Solve for x
    x = 131,801,626.32/10,991.48
  6. Step 6: Final answer
    x = 11,991.26

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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.