Home / 20,733.80-31,091.70-9,636.80

Finding the Fourth Proportional to 20,733.80, 31,091.70 and 9,636.80

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Solution

The fourth proportional to 20,733.80, 31,091.70 and 9,636.80 is: 14,451.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.80 : 31,091.70 = 9,636.80 : x
  2. Step 2: Convert to fraction form
    20,733.80/31,091.70 = 9,636.80/x
  3. Step 3: Cross multiply
    20,733.80x = 31,091.70 × 9,636.80
  4. Step 4: Simplify right side
    20,733.80x = 299,624,494.56
  5. Step 5: Solve for x
    x = 299,624,494.56/20,733.80
  6. Step 6: Final answer
    x = 14,451.02

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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.