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Finding the Fourth Proportional to 15,072.44, 20,801.10 and 8,783.48

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Solution

The fourth proportional to 15,072.44, 20,801.10 and 8,783.48 is: 12,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.44 : 20,801.10 = 8,783.48 : x
  2. Step 2: Convert to fraction form
    15,072.44/20,801.10 = 8,783.48/x
  3. Step 3: Cross multiply
    15,072.44x = 20,801.10 × 8,783.48
  4. Step 4: Simplify right side
    15,072.44x = 182,706,045.83
  5. Step 5: Solve for x
    x = 182,706,045.83/15,072.44
  6. Step 6: Final answer
    x = 12,121.86

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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.