Home / 20,126.10-30,194.55-17,949.90

Finding the Fourth Proportional to 20,126.10, 30,194.55 and 17,949.90

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Solution

The fourth proportional to 20,126.10, 30,194.55 and 17,949.90 is: 26,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.10 : 30,194.55 = 17,949.90 : x
  2. Step 2: Convert to fraction form
    20,126.10/30,194.55 = 17,949.90/x
  3. Step 3: Cross multiply
    20,126.10x = 30,194.55 × 17,949.90
  4. Step 4: Simplify right side
    20,126.10x = 541,989,153.05
  5. Step 5: Solve for x
    x = 541,989,153.05/20,126.10
  6. Step 6: Final answer
    x = 26,929.67

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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.