Home / 10,991.57-16,480.67-4,320.07

Finding the Fourth Proportional to 10,991.57, 16,480.67 and 4,320.07

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Solution

The fourth proportional to 10,991.57, 16,480.67 and 4,320.07 is: 6,477.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.57 : 16,480.67 = 4,320.07 : x
  2. Step 2: Convert to fraction form
    10,991.57/16,480.67 = 4,320.07/x
  3. Step 3: Cross multiply
    10,991.57x = 16,480.67 × 4,320.07
  4. Step 4: Simplify right side
    10,991.57x = 71,197,585.24
  5. Step 5: Solve for x
    x = 71,197,585.24/10,991.57
  6. Step 6: Final answer
    x = 6,477.47

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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.