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Finding the Fourth Proportional to 12,630, 17,429.04 and 6,964.80

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Solution

The fourth proportional to 12,630, 17,429.04 and 6,964.80 is: 9,611.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630 : 17,429.04 = 6,964.80 : x
  2. Step 2: Convert to fraction form
    12,630/17,429.04 = 6,964.80/x
  3. Step 3: Cross multiply
    12,630x = 17,429.04 × 6,964.80
  4. Step 4: Simplify right side
    12,630x = 121,389,777.79
  5. Step 5: Solve for x
    x = 121,389,777.79/12,630
  6. Step 6: Final answer
    x = 9,611.23

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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.