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Finding the Fourth Proportional to 15,019.02, 20,723.04 and 8,728.02

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Solution

The fourth proportional to 15,019.02, 20,723.04 and 8,728.02 is: 12,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.02 : 20,723.04 = 8,728.02 : x
  2. Step 2: Convert to fraction form
    15,019.02/20,723.04 = 8,728.02/x
  3. Step 3: Cross multiply
    15,019.02x = 20,723.04 × 8,728.02
  4. Step 4: Simplify right side
    15,019.02x = 180,871,107.58
  5. Step 5: Solve for x
    x = 180,871,107.58/15,019.02
  6. Step 6: Final answer
    x = 12,042.80

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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.