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Finding the Fourth Proportional to 9,996.60, 15,005.70 and 5,622.60

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Solution

The fourth proportional to 9,996.60, 15,005.70 and 5,622.60 is: 8,439.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,996.60 : 15,005.70 = 5,622.60 : x
  2. Step 2: Convert to fraction form
    9,996.60/15,005.70 = 5,622.60/x
  3. Step 3: Cross multiply
    9,996.60x = 15,005.70 × 5,622.60
  4. Step 4: Simplify right side
    9,996.60x = 84,371,048.82
  5. Step 5: Solve for x
    x = 84,371,048.82/9,996.60
  6. Step 6: Final answer
    x = 8,439.97

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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.