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Finding the Fourth Proportional to 18,847.56, 25,998.12 and 13,549.56

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Solution

The fourth proportional to 18,847.56, 25,998.12 and 13,549.56 is: 18,690.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,847.56 : 25,998.12 = 13,549.56 : x
  2. Step 2: Convert to fraction form
    18,847.56/25,998.12 = 13,549.56/x
  3. Step 3: Cross multiply
    18,847.56x = 25,998.12 × 13,549.56
  4. Step 4: Simplify right side
    18,847.56x = 352,263,086.83
  5. Step 5: Solve for x
    x = 352,263,086.83/18,847.56
  6. Step 6: Final answer
    x = 18,690.12

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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.