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Finding the Fourth Proportional to 15,361.00, 21,198.18 and 8,988.81

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Solution

The fourth proportional to 15,361.00, 21,198.18 and 8,988.81 is: 12,404.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.00 : 21,198.18 = 8,988.81 : x
  2. Step 2: Convert to fraction form
    15,361.00/21,198.18 = 8,988.81/x
  3. Step 3: Cross multiply
    15,361.00x = 21,198.18 × 8,988.81
  4. Step 4: Simplify right side
    15,361.00x = 190,546,490.35
  5. Step 5: Solve for x
    x = 190,546,490.35/15,361.00
  6. Step 6: Final answer
    x = 12,404.57

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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.