Home / 13,711.92-18,922.32-8,046.78

Finding the Fourth Proportional to 13,711.92, 18,922.32 and 8,046.78

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Solution

The fourth proportional to 13,711.92, 18,922.32 and 8,046.78 is: 11,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.92 : 18,922.32 = 8,046.78 : x
  2. Step 2: Convert to fraction form
    13,711.92/18,922.32 = 8,046.78/x
  3. Step 3: Cross multiply
    13,711.92x = 18,922.32 × 8,046.78
  4. Step 4: Simplify right side
    13,711.92x = 152,263,746.13
  5. Step 5: Solve for x
    x = 152,263,746.13/13,711.92
  6. Step 6: Final answer
    x = 11,104.48

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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.