Home / 13,422.20-20,141.46-8,485.02

Finding the Fourth Proportional to 13,422.20, 20,141.46 and 8,485.02

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Solution

The fourth proportional to 13,422.20, 20,141.46 and 8,485.02 is: 12,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.20 : 20,141.46 = 8,485.02 : x
  2. Step 2: Convert to fraction form
    13,422.20/20,141.46 = 8,485.02/x
  3. Step 3: Cross multiply
    13,422.20x = 20,141.46 × 8,485.02
  4. Step 4: Simplify right side
    13,422.20x = 170,900,690.93
  5. Step 5: Solve for x
    x = 170,900,690.93/13,422.20
  6. Step 6: Final answer
    x = 12,732.69

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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.