Home / 20,743.77-31,103.15-8,265.72

Finding the Fourth Proportional to 20,743.77, 31,103.15 and 8,265.72

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Solution

The fourth proportional to 20,743.77, 31,103.15 and 8,265.72 is: 12,393.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.77 : 31,103.15 = 8,265.72 : x
  2. Step 2: Convert to fraction form
    20,743.77/31,103.15 = 8,265.72/x
  3. Step 3: Cross multiply
    20,743.77x = 31,103.15 × 8,265.72
  4. Step 4: Simplify right side
    20,743.77x = 257,089,887.69
  5. Step 5: Solve for x
    x = 257,089,887.69/20,743.77
  6. Step 6: Final answer
    x = 12,393.60

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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.