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Finding the Fourth Proportional to 13,336.92, 18,406.71 and 7,747.92

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Solution

The fourth proportional to 13,336.92, 18,406.71 and 7,747.92 is: 10,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,336.92 : 18,406.71 = 7,747.92 : x
  2. Step 2: Convert to fraction form
    13,336.92/18,406.71 = 7,747.92/x
  3. Step 3: Cross multiply
    13,336.92x = 18,406.71 × 7,747.92
  4. Step 4: Simplify right side
    13,336.92x = 142,613,716.54
  5. Step 5: Solve for x
    x = 142,613,716.54/13,336.92
  6. Step 6: Final answer
    x = 10,693.15

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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.