Home / 20,165.10-30,211.20-17,832.30

Finding the Fourth Proportional to 20,165.10, 30,211.20 and 17,832.30

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Solution

The fourth proportional to 20,165.10, 30,211.20 and 17,832.30 is: 26,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.10 : 30,211.20 = 17,832.30 : x
  2. Step 2: Convert to fraction form
    20,165.10/30,211.20 = 17,832.30/x
  3. Step 3: Cross multiply
    20,165.10x = 30,211.20 × 17,832.30
  4. Step 4: Simplify right side
    20,165.10x = 538,735,181.76
  5. Step 5: Solve for x
    x = 538,735,181.76/20,165.10
  6. Step 6: Final answer
    x = 26,716.22

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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.