Home / 13,287.77-18,336.44-8,251.88

Finding the Fourth Proportional to 13,287.77, 18,336.44 and 8,251.88

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Solution

The fourth proportional to 13,287.77, 18,336.44 and 8,251.88 is: 11,387.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.77 : 18,336.44 = 8,251.88 : x
  2. Step 2: Convert to fraction form
    13,287.77/18,336.44 = 8,251.88/x
  3. Step 3: Cross multiply
    13,287.77x = 18,336.44 × 8,251.88
  4. Step 4: Simplify right side
    13,287.77x = 151,310,107.09
  5. Step 5: Solve for x
    x = 151,310,107.09/13,287.77
  6. Step 6: Final answer
    x = 11,387.17

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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.