Home / 20,694.10-31,023.60-7,538.80

Finding the Fourth Proportional to 20,694.10, 31,023.60 and 7,538.80

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Solution

The fourth proportional to 20,694.10, 31,023.60 and 7,538.80 is: 11,301.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.10 : 31,023.60 = 7,538.80 : x
  2. Step 2: Convert to fraction form
    20,694.10/31,023.60 = 7,538.80/x
  3. Step 3: Cross multiply
    20,694.10x = 31,023.60 × 7,538.80
  4. Step 4: Simplify right side
    20,694.10x = 233,880,715.68
  5. Step 5: Solve for x
    x = 233,880,715.68/20,694.10
  6. Step 6: Final answer
    x = 11,301.81

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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.