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Finding the Fourth Proportional to 12,942.07, 17,859.96 and 7,353.07

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Solution

The fourth proportional to 12,942.07, 17,859.96 and 7,353.07 is: 10,147.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.07 : 17,859.96 = 7,353.07 : x
  2. Step 2: Convert to fraction form
    12,942.07/17,859.96 = 7,353.07/x
  3. Step 3: Cross multiply
    12,942.07x = 17,859.96 × 7,353.07
  4. Step 4: Simplify right side
    12,942.07x = 131,325,536.08
  5. Step 5: Solve for x
    x = 131,325,536.08/12,942.07
  6. Step 6: Final answer
    x = 10,147.18

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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.