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Finding the Fourth Proportional to 11,571.69, 15,983.18 and 8,379.93

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Solution

The fourth proportional to 11,571.69, 15,983.18 and 8,379.93 is: 11,574.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,571.69 : 15,983.18 = 8,379.93 : x
  2. Step 2: Convert to fraction form
    11,571.69/15,983.18 = 8,379.93/x
  3. Step 3: Cross multiply
    11,571.69x = 15,983.18 × 8,379.93
  4. Step 4: Simplify right side
    11,571.69x = 133,937,887.68
  5. Step 5: Solve for x
    x = 133,937,887.68/11,571.69
  6. Step 6: Final answer
    x = 11,574.62

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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.