Home / 20,743.40-31,102.58-8,265.35

Finding the Fourth Proportional to 20,743.40, 31,102.58 and 8,265.35

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Solution

The fourth proportional to 20,743.40, 31,102.58 and 8,265.35 is: 12,393.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.40 : 31,102.58 = 8,265.35 : x
  2. Step 2: Convert to fraction form
    20,743.40/31,102.58 = 8,265.35/x
  3. Step 3: Cross multiply
    20,743.40x = 31,102.58 × 8,265.35
  4. Step 4: Simplify right side
    20,743.40x = 257,073,709.60
  5. Step 5: Solve for x
    x = 257,073,709.60/20,743.40
  6. Step 6: Final answer
    x = 12,393.04

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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.