Home / 20,701.20-31,051.80-5,910.60

Finding the Fourth Proportional to 20,701.20, 31,051.80 and 5,910.60

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Solution

The fourth proportional to 20,701.20, 31,051.80 and 5,910.60 is: 8,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.20 : 31,051.80 = 5,910.60 : x
  2. Step 2: Convert to fraction form
    20,701.20/31,051.80 = 5,910.60/x
  3. Step 3: Cross multiply
    20,701.20x = 31,051.80 × 5,910.60
  4. Step 4: Simplify right side
    20,701.20x = 183,534,769.08
  5. Step 5: Solve for x
    x = 183,534,769.08/20,701.20
  6. Step 6: Final answer
    x = 8,865.90

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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.