Home / 20,653.28-30,958.61-8,168.24

Finding the Fourth Proportional to 20,653.28, 30,958.61 and 8,168.24

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Solution

The fourth proportional to 20,653.28, 30,958.61 and 8,168.24 is: 12,243.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.28 : 30,958.61 = 8,168.24 : x
  2. Step 2: Convert to fraction form
    20,653.28/30,958.61 = 8,168.24/x
  3. Step 3: Cross multiply
    20,653.28x = 30,958.61 × 8,168.24
  4. Step 4: Simplify right side
    20,653.28x = 252,877,393.10
  5. Step 5: Solve for x
    x = 252,877,393.10/20,653.28
  6. Step 6: Final answer
    x = 12,243.93

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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.