Home / 20,161.10-30,245.29-8,308.28

Finding the Fourth Proportional to 20,161.10, 30,245.29 and 8,308.28

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Solution

The fourth proportional to 20,161.10, 30,245.29 and 8,308.28 is: 12,463.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.10 : 30,245.29 = 8,308.28 : x
  2. Step 2: Convert to fraction form
    20,161.10/30,245.29 = 8,308.28/x
  3. Step 3: Cross multiply
    20,161.10x = 30,245.29 × 8,308.28
  4. Step 4: Simplify right side
    20,161.10x = 251,286,166.00
  5. Step 5: Solve for x
    x = 251,286,166.00/20,161.10
  6. Step 6: Final answer
    x = 12,463.91

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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.