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Finding the Fourth Proportional to 15,076.89, 20,804.31 and 8,361.18

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Solution

The fourth proportional to 15,076.89, 20,804.31 and 8,361.18 is: 11,537.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.89 : 20,804.31 = 8,361.18 : x
  2. Step 2: Convert to fraction form
    15,076.89/20,804.31 = 8,361.18/x
  3. Step 3: Cross multiply
    15,076.89x = 20,804.31 × 8,361.18
  4. Step 4: Simplify right side
    15,076.89x = 173,948,580.69
  5. Step 5: Solve for x
    x = 173,948,580.69/15,076.89
  6. Step 6: Final answer
    x = 11,537.43

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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.