Home / 11,821.28-16,313.13-6,516.11

Finding the Fourth Proportional to 11,821.28, 16,313.13 and 6,516.11

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Solution

The fourth proportional to 11,821.28, 16,313.13 and 6,516.11 is: 8,992.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.28 : 16,313.13 = 6,516.11 : x
  2. Step 2: Convert to fraction form
    11,821.28/16,313.13 = 6,516.11/x
  3. Step 3: Cross multiply
    11,821.28x = 16,313.13 × 6,516.11
  4. Step 4: Simplify right side
    11,821.28x = 106,298,190.31
  5. Step 5: Solve for x
    x = 106,298,190.31/11,821.28
  6. Step 6: Final answer
    x = 8,992.11

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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.