Home / 20,018.85-30,004.82-8,165.23

Finding the Fourth Proportional to 20,018.85, 30,004.82 and 8,165.23

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Solution

The fourth proportional to 20,018.85, 30,004.82 and 8,165.23 is: 12,238.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.85 : 30,004.82 = 8,165.23 : x
  2. Step 2: Convert to fraction form
    20,018.85/30,004.82 = 8,165.23/x
  3. Step 3: Cross multiply
    20,018.85x = 30,004.82 × 8,165.23
  4. Step 4: Simplify right side
    20,018.85x = 244,996,217.12
  5. Step 5: Solve for x
    x = 244,996,217.12/20,018.85
  6. Step 6: Final answer
    x = 12,238.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.