Home / 18,619.02-25,664.25-15,255.90

Finding the Fourth Proportional to 18,619.02, 25,664.25 and 15,255.90

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Solution

The fourth proportional to 18,619.02, 25,664.25 and 15,255.90 is: 21,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.02 : 25,664.25 = 15,255.90 : x
  2. Step 2: Convert to fraction form
    18,619.02/25,664.25 = 15,255.90/x
  3. Step 3: Cross multiply
    18,619.02x = 25,664.25 × 15,255.90
  4. Step 4: Simplify right side
    18,619.02x = 391,531,231.58
  5. Step 5: Solve for x
    x = 391,531,231.58/18,619.02
  6. Step 6: Final answer
    x = 21,028.56

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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.