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Finding the Fourth Proportional to 18,101.66, 24,995.50 and 13,617.64

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Solution

The fourth proportional to 18,101.66, 24,995.50 and 13,617.64 is: 18,803.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.66 : 24,995.50 = 13,617.64 : x
  2. Step 2: Convert to fraction form
    18,101.66/24,995.50 = 13,617.64/x
  3. Step 3: Cross multiply
    18,101.66x = 24,995.50 × 13,617.64
  4. Step 4: Simplify right side
    18,101.66x = 340,379,720.62
  5. Step 5: Solve for x
    x = 340,379,720.62/18,101.66
  6. Step 6: Final answer
    x = 18,803.78

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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.