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Finding the Fourth Proportional to 11,006.60, 16,485.60 and 4,429.40

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Solution

The fourth proportional to 11,006.60, 16,485.60 and 4,429.40 is: 6,634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,006.60 : 16,485.60 = 4,429.40 : x
  2. Step 2: Convert to fraction form
    11,006.60/16,485.60 = 4,429.40/x
  3. Step 3: Cross multiply
    11,006.60x = 16,485.60 × 4,429.40
  4. Step 4: Simplify right side
    11,006.60x = 73,021,316.64
  5. Step 5: Solve for x
    x = 73,021,316.64/11,006.60
  6. Step 6: Final answer
    x = 6,634.32

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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.