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Finding the Fourth Proportional to 14,672.20, 20,246.73 and 8,621.54

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Solution

The fourth proportional to 14,672.20, 20,246.73 and 8,621.54 is: 11,897.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.20 : 20,246.73 = 8,621.54 : x
  2. Step 2: Convert to fraction form
    14,672.20/20,246.73 = 8,621.54/x
  3. Step 3: Cross multiply
    14,672.20x = 20,246.73 × 8,621.54
  4. Step 4: Simplify right side
    14,672.20x = 174,557,992.56
  5. Step 5: Solve for x
    x = 174,557,992.56/14,672.20
  6. Step 6: Final answer
    x = 11,897.19

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1.5x scale

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.