Home / 18,635.20-25,716.36-13,876.43

Finding the Fourth Proportional to 18,635.20, 25,716.36 and 13,876.43

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Solution

The fourth proportional to 18,635.20, 25,716.36 and 13,876.43 is: 19,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.20 : 25,716.36 = 13,876.43 : x
  2. Step 2: Convert to fraction form
    18,635.20/25,716.36 = 13,876.43/x
  3. Step 3: Cross multiply
    18,635.20x = 25,716.36 × 13,876.43
  4. Step 4: Simplify right side
    18,635.20x = 356,851,140.81
  5. Step 5: Solve for x
    x = 356,851,140.81/18,635.20
  6. Step 6: Final answer
    x = 19,149.31

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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.