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Finding the Fourth Proportional to 12,630.85, 17,429.82 and 6,965.66

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Solution

The fourth proportional to 12,630.85, 17,429.82 and 6,965.66 is: 9,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.85 : 17,429.82 = 6,965.66 : x
  2. Step 2: Convert to fraction form
    12,630.85/17,429.82 = 6,965.66/x
  3. Step 3: Cross multiply
    12,630.85x = 17,429.82 × 6,965.66
  4. Step 4: Simplify right side
    12,630.85x = 121,410,276.21
  5. Step 5: Solve for x
    x = 121,410,276.21/12,630.85
  6. Step 6: Final answer
    x = 9,612.20

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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.