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Finding the Fourth Proportional to 12,663.62, 18,983.81 and 4,866.56

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Solution

The fourth proportional to 12,663.62, 18,983.81 and 4,866.56 is: 7,295.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.62 : 18,983.81 = 4,866.56 : x
  2. Step 2: Convert to fraction form
    12,663.62/18,983.81 = 4,866.56/x
  3. Step 3: Cross multiply
    12,663.62x = 18,983.81 × 4,866.56
  4. Step 4: Simplify right side
    12,663.62x = 92,385,755.47
  5. Step 5: Solve for x
    x = 92,385,755.47/12,663.62
  6. Step 6: Final answer
    x = 7,295.37

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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.