Home / 20,418.26-30,635.30-7,947.05

Finding the Fourth Proportional to 20,418.26, 30,635.30 and 7,947.05

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Solution

The fourth proportional to 20,418.26, 30,635.30 and 7,947.05 is: 11,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.26 : 30,635.30 = 7,947.05 : x
  2. Step 2: Convert to fraction form
    20,418.26/30,635.30 = 7,947.05/x
  3. Step 3: Cross multiply
    20,418.26x = 30,635.30 × 7,947.05
  4. Step 4: Simplify right side
    20,418.26x = 243,460,127.56
  5. Step 5: Solve for x
    x = 243,460,127.56/20,418.26
  6. Step 6: Final answer
    x = 11,923.65

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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.