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Finding the Fourth Proportional to 15,021.52, 20,729.48 and 8,307

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Solution

The fourth proportional to 15,021.52, 20,729.48 and 8,307 is: 11,463.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.52 : 20,729.48 = 8,307 : x
  2. Step 2: Convert to fraction form
    15,021.52/20,729.48 = 8,307/x
  3. Step 3: Cross multiply
    15,021.52x = 20,729.48 × 8,307
  4. Step 4: Simplify right side
    15,021.52x = 172,199,748.83
  5. Step 5: Solve for x
    x = 172,199,748.83/15,021.52
  6. Step 6: Final answer
    x = 11,463.54

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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.