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Finding the Fourth Proportional to 9,143.91, 13,740.48 and 8,873.28

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Solution

The fourth proportional to 9,143.91, 13,740.48 and 8,873.28 is: 13,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.91 : 13,740.48 = 8,873.28 : x
  2. Step 2: Convert to fraction form
    9,143.91/13,740.48 = 8,873.28/x
  3. Step 3: Cross multiply
    9,143.91x = 13,740.48 × 8,873.28
  4. Step 4: Simplify right side
    9,143.91x = 121,923,126.37
  5. Step 5: Solve for x
    x = 121,923,126.37/9,143.91
  6. Step 6: Final answer
    x = 13,333.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.