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Finding the Fourth Proportional to 14,917.38, 20,586.30 and 8,203.30

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Solution

The fourth proportional to 14,917.38, 20,586.30 and 8,203.30 is: 11,320.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,917.38 : 20,586.30 = 8,203.30 : x
  2. Step 2: Convert to fraction form
    14,917.38/20,586.30 = 8,203.30/x
  3. Step 3: Cross multiply
    14,917.38x = 20,586.30 × 8,203.30
  4. Step 4: Simplify right side
    14,917.38x = 168,875,594.79
  5. Step 5: Solve for x
    x = 168,875,594.79/14,917.38
  6. Step 6: Final answer
    x = 11,320.73

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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.