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Finding the Fourth Proportional to 10,863.10, 14,992.05 and 6,384.61

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Solution

The fourth proportional to 10,863.10, 14,992.05 and 6,384.61 is: 8,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.10 : 14,992.05 = 6,384.61 : x
  2. Step 2: Convert to fraction form
    10,863.10/14,992.05 = 6,384.61/x
  3. Step 3: Cross multiply
    10,863.10x = 14,992.05 × 6,384.61
  4. Step 4: Simplify right side
    10,863.10x = 95,718,392.35
  5. Step 5: Solve for x
    x = 95,718,392.35/10,863.10
  6. Step 6: Final answer
    x = 8,811.33

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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.