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Finding the Fourth Proportional to 27,287.21, 40,935.77 and 11,276.78

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Solution

The fourth proportional to 27,287.21, 40,935.77 and 11,276.78 is: 16,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,287.21 : 40,935.77 = 11,276.78 : x
  2. Step 2: Convert to fraction form
    27,287.21/40,935.77 = 11,276.78/x
  3. Step 3: Cross multiply
    27,287.21x = 40,935.77 × 11,276.78
  4. Step 4: Simplify right side
    27,287.21x = 461,623,411.36
  5. Step 5: Solve for x
    x = 461,623,411.36/27,287.21
  6. Step 6: Final answer
    x = 16,917.21

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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.