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Finding the Fourth Proportional to 14,813.71, 20,429.69 and 8,843.20

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Solution

The fourth proportional to 14,813.71, 20,429.69 and 8,843.20 is: 12,195.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,813.71 : 20,429.69 = 8,843.20 : x
  2. Step 2: Convert to fraction form
    14,813.71/20,429.69 = 8,843.20/x
  3. Step 3: Cross multiply
    14,813.71x = 20,429.69 × 8,843.20
  4. Step 4: Simplify right side
    14,813.71x = 180,663,739.32
  5. Step 5: Solve for x
    x = 180,663,739.32/14,813.71
  6. Step 6: Final answer
    x = 12,195.71

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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.