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Finding the Fourth Proportional to 14,917.08, 20,579.67 and 9,615

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Solution

The fourth proportional to 14,917.08, 20,579.67 and 9,615 is: 13,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,917.08 : 20,579.67 = 9,615 : x
  2. Step 2: Convert to fraction form
    14,917.08/20,579.67 = 9,615/x
  3. Step 3: Cross multiply
    14,917.08x = 20,579.67 × 9,615
  4. Step 4: Simplify right side
    14,917.08x = 197,873,527.05
  5. Step 5: Solve for x
    x = 197,873,527.05/14,917.08
  6. Step 6: Final answer
    x = 13,264.90

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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.