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Finding the Fourth Proportional to 12,614.43, 18,915.42 and 7,351.26

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Solution

The fourth proportional to 12,614.43, 18,915.42 and 7,351.26 is: 11,023.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.43 : 18,915.42 = 7,351.26 : x
  2. Step 2: Convert to fraction form
    12,614.43/18,915.42 = 7,351.26/x
  3. Step 3: Cross multiply
    12,614.43x = 18,915.42 × 7,351.26
  4. Step 4: Simplify right side
    12,614.43x = 139,052,127.06
  5. Step 5: Solve for x
    x = 139,052,127.06/12,614.43
  6. Step 6: Final answer
    x = 11,023.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.