Home / 13,422.43-20,133.62-3,427.18

Finding the Fourth Proportional to 13,422.43, 20,133.62 and 3,427.18

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Solution

The fourth proportional to 13,422.43, 20,133.62 and 3,427.18 is: 5,140.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.43 : 20,133.62 = 3,427.18 : x
  2. Step 2: Convert to fraction form
    13,422.43/20,133.62 = 3,427.18/x
  3. Step 3: Cross multiply
    13,422.43x = 20,133.62 × 3,427.18
  4. Step 4: Simplify right side
    13,422.43x = 69,001,539.79
  5. Step 5: Solve for x
    x = 69,001,539.79/13,422.43
  6. Step 6: Final answer
    x = 5,140.76

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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.