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Finding the Fourth Proportional to 18,977.66, 26,131.19 and 17,197.68

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Solution

The fourth proportional to 18,977.66, 26,131.19 and 17,197.68 is: 23,680.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.66 : 26,131.19 = 17,197.68 : x
  2. Step 2: Convert to fraction form
    18,977.66/26,131.19 = 17,197.68/x
  3. Step 3: Cross multiply
    18,977.66x = 26,131.19 × 17,197.68
  4. Step 4: Simplify right side
    18,977.66x = 449,395,843.64
  5. Step 5: Solve for x
    x = 449,395,843.64/18,977.66
  6. Step 6: Final answer
    x = 23,680.26

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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.