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Finding the Fourth Proportional to 12,659.26, 17,469.78 and 7,070.26

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Solution

The fourth proportional to 12,659.26, 17,469.78 and 7,070.26 is: 9,756.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.26 : 17,469.78 = 7,070.26 : x
  2. Step 2: Convert to fraction form
    12,659.26/17,469.78 = 7,070.26/x
  3. Step 3: Cross multiply
    12,659.26x = 17,469.78 × 7,070.26
  4. Step 4: Simplify right side
    12,659.26x = 123,515,886.74
  5. Step 5: Solve for x
    x = 123,515,886.74/12,659.26
  6. Step 6: Final answer
    x = 9,756.96

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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.