Home / 18,219.55-25,090.04-15,828.43

Finding the Fourth Proportional to 18,219.55, 25,090.04 and 15,828.43

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Solution

The fourth proportional to 18,219.55, 25,090.04 and 15,828.43 is: 21,797.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.55 : 25,090.04 = 15,828.43 : x
  2. Step 2: Convert to fraction form
    18,219.55/25,090.04 = 15,828.43/x
  3. Step 3: Cross multiply
    18,219.55x = 25,090.04 × 15,828.43
  4. Step 4: Simplify right side
    18,219.55x = 397,135,859.33
  5. Step 5: Solve for x
    x = 397,135,859.33/18,219.55
  6. Step 6: Final answer
    x = 21,797.24

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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.