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Finding the Fourth Proportional to 12,975.55, 17,906.26 and 7,007.22

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Solution

The fourth proportional to 12,975.55, 17,906.26 and 7,007.22 is: 9,669.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.55 : 17,906.26 = 7,007.22 : x
  2. Step 2: Convert to fraction form
    12,975.55/17,906.26 = 7,007.22/x
  3. Step 3: Cross multiply
    12,975.55x = 17,906.26 × 7,007.22
  4. Step 4: Simplify right side
    12,975.55x = 125,473,098.82
  5. Step 5: Solve for x
    x = 125,473,098.82/12,975.55
  6. Step 6: Final answer
    x = 9,669.96

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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.