Home / 20,704.20-31,056.30-20,157.46

Finding the Fourth Proportional to 20,704.20, 31,056.30 and 20,157.46

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Solution

The fourth proportional to 20,704.20, 31,056.30 and 20,157.46 is: 30,236.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.20 : 31,056.30 = 20,157.46 : x
  2. Step 2: Convert to fraction form
    20,704.20/31,056.30 = 20,157.46/x
  3. Step 3: Cross multiply
    20,704.20x = 31,056.30 × 20,157.46
  4. Step 4: Simplify right side
    20,704.20x = 626,016,125.00
  5. Step 5: Solve for x
    x = 626,016,125.00/20,704.20
  6. Step 6: Final answer
    x = 30,236.19

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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.