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Finding the Fourth Proportional to 10,999.71, 15,179.54 and 6,283.71

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Solution

The fourth proportional to 10,999.71, 15,179.54 and 6,283.71 is: 8,671.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.71 : 15,179.54 = 6,283.71 : x
  2. Step 2: Convert to fraction form
    10,999.71/15,179.54 = 6,283.71/x
  3. Step 3: Cross multiply
    10,999.71x = 15,179.54 × 6,283.71
  4. Step 4: Simplify right side
    10,999.71x = 95,383,795.87
  5. Step 5: Solve for x
    x = 95,383,795.87/10,999.71
  6. Step 6: Final answer
    x = 8,671.48

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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.