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Finding the Fourth Proportional to 12,659.85, 17,469.08 and 6,994.25

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Solution

The fourth proportional to 12,659.85, 17,469.08 and 6,994.25 is: 9,651.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.85 : 17,469.08 = 6,994.25 : x
  2. Step 2: Convert to fraction form
    12,659.85/17,469.08 = 6,994.25/x
  3. Step 3: Cross multiply
    12,659.85x = 17,469.08 × 6,994.25
  4. Step 4: Simplify right side
    12,659.85x = 122,183,219.82
  5. Step 5: Solve for x
    x = 122,183,219.82/12,659.85
  6. Step 6: Final answer
    x = 9,651.24

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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.