Home / 11,925.45-16,456.48-6,619.92

Finding the Fourth Proportional to 11,925.45, 16,456.48 and 6,619.92

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Solution

The fourth proportional to 11,925.45, 16,456.48 and 6,619.92 is: 9,135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.45 : 16,456.48 = 6,619.92 : x
  2. Step 2: Convert to fraction form
    11,925.45/16,456.48 = 6,619.92/x
  3. Step 3: Cross multiply
    11,925.45x = 16,456.48 × 6,619.92
  4. Step 4: Simplify right side
    11,925.45x = 108,940,617.97
  5. Step 5: Solve for x
    x = 108,940,617.97/11,925.45
  6. Step 6: Final answer
    x = 9,135.14

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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.