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Finding the Fourth Proportional to 15,020.04, 20,728.92 and 8,732

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Solution

The fourth proportional to 15,020.04, 20,728.92 and 8,732 is: 12,050.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.04 : 20,728.92 = 8,732 : x
  2. Step 2: Convert to fraction form
    15,020.04/20,728.92 = 8,732/x
  3. Step 3: Cross multiply
    15,020.04x = 20,728.92 × 8,732
  4. Step 4: Simplify right side
    15,020.04x = 181,004,929.44
  5. Step 5: Solve for x
    x = 181,004,929.44/15,020.04
  6. Step 6: Final answer
    x = 12,050.90

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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.