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Finding the Fourth Proportional to 11,239.71, 16,856.83 and 4,659.58

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Solution

The fourth proportional to 11,239.71, 16,856.83 and 4,659.58 is: 6,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.71 : 16,856.83 = 4,659.58 : x
  2. Step 2: Convert to fraction form
    11,239.71/16,856.83 = 4,659.58/x
  3. Step 3: Cross multiply
    11,239.71x = 16,856.83 × 4,659.58
  4. Step 4: Simplify right side
    11,239.71x = 78,545,747.93
  5. Step 5: Solve for x
    x = 78,545,747.93/11,239.71
  6. Step 6: Final answer
    x = 6,988.24

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