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Finding the Fourth Proportional to 11,887.71, 17,816.07 and 4,859.49

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Solution

The fourth proportional to 11,887.71, 17,816.07 and 4,859.49 is: 7,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.71 : 17,816.07 = 4,859.49 : x
  2. Step 2: Convert to fraction form
    11,887.71/17,816.07 = 4,859.49/x
  3. Step 3: Cross multiply
    11,887.71x = 17,816.07 × 4,859.49
  4. Step 4: Simplify right side
    11,887.71x = 86,577,014.00
  5. Step 5: Solve for x
    x = 86,577,014.00/11,887.71
  6. Step 6: Final answer
    x = 7,282.90

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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.