Home / 21,883.24-30,168.42-18,494.30

Finding the Fourth Proportional to 21,883.24, 30,168.42 and 18,494.30

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Solution

The fourth proportional to 21,883.24, 30,168.42 and 18,494.30 is: 25,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.24 : 30,168.42 = 18,494.30 : x
  2. Step 2: Convert to fraction form
    21,883.24/30,168.42 = 18,494.30/x
  3. Step 3: Cross multiply
    21,883.24x = 30,168.42 × 18,494.30
  4. Step 4: Simplify right side
    21,883.24x = 557,943,604.40
  5. Step 5: Solve for x
    x = 557,943,604.40/21,883.24
  6. Step 6: Final answer
    x = 25,496.40

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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.