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Finding the Fourth Proportional to 12,997.77, 17,936.91 and 7,029.45

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Solution

The fourth proportional to 12,997.77, 17,936.91 and 7,029.45 is: 9,700.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.77 : 17,936.91 = 7,029.45 : x
  2. Step 2: Convert to fraction form
    12,997.77/17,936.91 = 7,029.45/x
  3. Step 3: Cross multiply
    12,997.77x = 17,936.91 × 7,029.45
  4. Step 4: Simplify right side
    12,997.77x = 126,086,612.00
  5. Step 5: Solve for x
    x = 126,086,612.00/12,997.77
  6. Step 6: Final answer
    x = 9,700.63

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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.