Home / 20,675.25-30,973.86-12,216.52

Finding the Fourth Proportional to 20,675.25, 30,973.86 and 12,216.52

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Solution

The fourth proportional to 20,675.25, 30,973.86 and 12,216.52 is: 18,301.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.25 : 30,973.86 = 12,216.52 : x
  2. Step 2: Convert to fraction form
    20,675.25/30,973.86 = 12,216.52/x
  3. Step 3: Cross multiply
    20,675.25x = 30,973.86 × 12,216.52
  4. Step 4: Simplify right side
    20,675.25x = 378,392,818.88
  5. Step 5: Solve for x
    x = 378,392,818.88/20,675.25
  6. Step 6: Final answer
    x = 18,301.73

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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.