Home / 18,695.21-28,171.77-16,940.13

Finding the Fourth Proportional to 18,695.21, 28,171.77 and 16,940.13

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Solution

The fourth proportional to 18,695.21, 28,171.77 and 16,940.13 is: 25,527.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.21 : 28,171.77 = 16,940.13 : x
  2. Step 2: Convert to fraction form
    18,695.21/28,171.77 = 16,940.13/x
  3. Step 3: Cross multiply
    18,695.21x = 28,171.77 × 16,940.13
  4. Step 4: Simplify right side
    18,695.21x = 477,233,446.13
  5. Step 5: Solve for x
    x = 477,233,446.13/18,695.21
  6. Step 6: Final answer
    x = 25,527.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.