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Finding the Fourth Proportional to 15,917.21, 23,885.83 and 8,901.81

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Solution

The fourth proportional to 15,917.21, 23,885.83 and 8,901.81 is: 13,358.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,917.21 : 23,885.83 = 8,901.81 : x
  2. Step 2: Convert to fraction form
    15,917.21/23,885.83 = 8,901.81/x
  3. Step 3: Cross multiply
    15,917.21x = 23,885.83 × 8,901.81
  4. Step 4: Simplify right side
    15,917.21x = 212,627,120.35
  5. Step 5: Solve for x
    x = 212,627,120.35/15,917.21
  6. Step 6: Final answer
    x = 13,358.32

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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.