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Finding the Fourth Proportional to 12,079.62, 16,669.86 and 6,774.39

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Solution

The fourth proportional to 12,079.62, 16,669.86 and 6,774.39 is: 9,348.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.62 : 16,669.86 = 6,774.39 : x
  2. Step 2: Convert to fraction form
    12,079.62/16,669.86 = 6,774.39/x
  3. Step 3: Cross multiply
    12,079.62x = 16,669.86 × 6,774.39
  4. Step 4: Simplify right side
    12,079.62x = 112,928,202.00
  5. Step 5: Solve for x
    x = 112,928,202.00/12,079.62
  6. Step 6: Final answer
    x = 9,348.65

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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.