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Finding the Fourth Proportional to 11,854.99, 16,360.37 and 6,819.21

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Solution

The fourth proportional to 11,854.99, 16,360.37 and 6,819.21 is: 9,410.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,854.99 : 16,360.37 = 6,819.21 : x
  2. Step 2: Convert to fraction form
    11,854.99/16,360.37 = 6,819.21/x
  3. Step 3: Cross multiply
    11,854.99x = 16,360.37 × 6,819.21
  4. Step 4: Simplify right side
    11,854.99x = 111,564,790.18
  5. Step 5: Solve for x
    x = 111,564,790.18/11,854.99
  6. Step 6: Final answer
    x = 9,410.79

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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.