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Finding the Fourth Proportional to 18,361.44, 25,273.44 and 15,344.16

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Solution

The fourth proportional to 18,361.44, 25,273.44 and 15,344.16 is: 21,120.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.44 : 25,273.44 = 15,344.16 : x
  2. Step 2: Convert to fraction form
    18,361.44/25,273.44 = 15,344.16/x
  3. Step 3: Cross multiply
    18,361.44x = 25,273.44 × 15,344.16
  4. Step 4: Simplify right side
    18,361.44x = 387,799,707.11
  5. Step 5: Solve for x
    x = 387,799,707.11/18,361.44
  6. Step 6: Final answer
    x = 21,120.33

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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.