Home / 20,149.75-27,820.21-18,018.64

Finding the Fourth Proportional to 20,149.75, 27,820.21 and 18,018.64

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Solution

The fourth proportional to 20,149.75, 27,820.21 and 18,018.64 is: 24,877.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.75 : 27,820.21 = 18,018.64 : x
  2. Step 2: Convert to fraction form
    20,149.75/27,820.21 = 18,018.64/x
  3. Step 3: Cross multiply
    20,149.75x = 27,820.21 × 18,018.64
  4. Step 4: Simplify right side
    20,149.75x = 501,282,164.57
  5. Step 5: Solve for x
    x = 501,282,164.57/20,149.75
  6. Step 6: Final answer
    x = 24,877.84

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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.