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Finding the Fourth Proportional to 10,999.70, 16,490.66 and 4,419.56

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Solution

The fourth proportional to 10,999.70, 16,490.66 and 4,419.56 is: 6,625.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.70 : 16,490.66 = 4,419.56 : x
  2. Step 2: Convert to fraction form
    10,999.70/16,490.66 = 4,419.56/x
  3. Step 3: Cross multiply
    10,999.70x = 16,490.66 × 4,419.56
  4. Step 4: Simplify right side
    10,999.70x = 72,881,517.73
  5. Step 5: Solve for x
    x = 72,881,517.73/10,999.70
  6. Step 6: Final answer
    x = 6,625.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.