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Finding the Fourth Proportional to 12,671.69, 17,486.60 and 6,928.92

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Solution

The fourth proportional to 12,671.69, 17,486.60 and 6,928.92 is: 9,561.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.69 : 17,486.60 = 6,928.92 : x
  2. Step 2: Convert to fraction form
    12,671.69/17,486.60 = 6,928.92/x
  3. Step 3: Cross multiply
    12,671.69x = 17,486.60 × 6,928.92
  4. Step 4: Simplify right side
    12,671.69x = 121,163,217.83
  5. Step 5: Solve for x
    x = 121,163,217.83/12,671.69
  6. Step 6: Final answer
    x = 9,561.73

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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.