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Finding the Fourth Proportional to 14,803.92, 20,429.64 and 8,179.92

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Solution

The fourth proportional to 14,803.92, 20,429.64 and 8,179.92 is: 11,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,803.92 : 20,429.64 = 8,179.92 : x
  2. Step 2: Convert to fraction form
    14,803.92/20,429.64 = 8,179.92/x
  3. Step 3: Cross multiply
    14,803.92x = 20,429.64 × 8,179.92
  4. Step 4: Simplify right side
    14,803.92x = 167,112,820.83
  5. Step 5: Solve for x
    x = 167,112,820.83/14,803.92
  6. Step 6: Final answer
    x = 11,288.42

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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.