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Finding the Fourth Proportional to 12,662.78, 17,473.74 and 6,997.47

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Solution

The fourth proportional to 12,662.78, 17,473.74 and 6,997.47 is: 9,656.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.78 : 17,473.74 = 6,997.47 : x
  2. Step 2: Convert to fraction form
    12,662.78/17,473.74 = 6,997.47/x
  3. Step 3: Cross multiply
    12,662.78x = 17,473.74 × 6,997.47
  4. Step 4: Simplify right side
    12,662.78x = 122,271,971.44
  5. Step 5: Solve for x
    x = 122,271,971.44/12,662.78
  6. Step 6: Final answer
    x = 9,656.01

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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.