Home / 20,406.37-30,605.97-5,611.72

Finding the Fourth Proportional to 20,406.37, 30,605.97 and 5,611.72

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Solution

The fourth proportional to 20,406.37, 30,605.97 and 5,611.72 is: 8,416.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.37 : 30,605.97 = 5,611.72 : x
  2. Step 2: Convert to fraction form
    20,406.37/30,605.97 = 5,611.72/x
  3. Step 3: Cross multiply
    20,406.37x = 30,605.97 × 5,611.72
  4. Step 4: Simplify right side
    20,406.37x = 171,752,133.97
  5. Step 5: Solve for x
    x = 171,752,133.97/20,406.37
  6. Step 6: Final answer
    x = 8,416.59

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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.