Home / 20,219.10-30,334.05-18,042.90

Finding the Fourth Proportional to 20,219.10, 30,334.05 and 18,042.90

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Solution

The fourth proportional to 20,219.10, 30,334.05 and 18,042.90 is: 27,069.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.10 : 30,334.05 = 18,042.90 : x
  2. Step 2: Convert to fraction form
    20,219.10/30,334.05 = 18,042.90/x
  3. Step 3: Cross multiply
    20,219.10x = 30,334.05 × 18,042.90
  4. Step 4: Simplify right side
    20,219.10x = 547,314,230.75
  5. Step 5: Solve for x
    x = 547,314,230.75/20,219.10
  6. Step 6: Final answer
    x = 27,069.17

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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.