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Finding the Fourth Proportional to 14,673.60, 20,249.64 and 8,705.61

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Solution

The fourth proportional to 14,673.60, 20,249.64 and 8,705.61 is: 12,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,673.60 : 20,249.64 = 8,705.61 : x
  2. Step 2: Convert to fraction form
    14,673.60/20,249.64 = 8,705.61/x
  3. Step 3: Cross multiply
    14,673.60x = 20,249.64 × 8,705.61
  4. Step 4: Simplify right side
    14,673.60x = 176,285,468.48
  5. Step 5: Solve for x
    x = 176,285,468.48/14,673.60
  6. Step 6: Final answer
    x = 12,013.78

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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.