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Finding the Fourth Proportional to 18,539.76, 27,786.30 and 13,247.22

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Solution

The fourth proportional to 18,539.76, 27,786.30 and 13,247.22 is: 19,854.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.76 : 27,786.30 = 13,247.22 : x
  2. Step 2: Convert to fraction form
    18,539.76/27,786.30 = 13,247.22/x
  3. Step 3: Cross multiply
    18,539.76x = 27,786.30 × 13,247.22
  4. Step 4: Simplify right side
    18,539.76x = 368,091,229.09
  5. Step 5: Solve for x
    x = 368,091,229.09/18,539.76
  6. Step 6: Final answer
    x = 19,854.15

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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.