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Finding the Fourth Proportional to 22,361.40, 30,823.56 and 18,118.80

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Solution

The fourth proportional to 22,361.40, 30,823.56 and 18,118.80 is: 24,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,361.40 : 30,823.56 = 18,118.80 : x
  2. Step 2: Convert to fraction form
    22,361.40/30,823.56 = 18,118.80/x
  3. Step 3: Cross multiply
    22,361.40x = 30,823.56 × 18,118.80
  4. Step 4: Simplify right side
    22,361.40x = 558,485,918.93
  5. Step 5: Solve for x
    x = 558,485,918.93/22,361.40
  6. Step 6: Final answer
    x = 24,975.45

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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.