Home / 19,620.66-29,427.84-5,385.82

Finding the Fourth Proportional to 19,620.66, 29,427.84 and 5,385.82

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Solution

The fourth proportional to 19,620.66, 29,427.84 and 5,385.82 is: 8,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.66 : 29,427.84 = 5,385.82 : x
  2. Step 2: Convert to fraction form
    19,620.66/29,427.84 = 5,385.82/x
  3. Step 3: Cross multiply
    19,620.66x = 29,427.84 × 5,385.82
  4. Step 4: Simplify right side
    19,620.66x = 158,493,046.86
  5. Step 5: Solve for x
    x = 158,493,046.86/19,620.66
  6. Step 6: Final answer
    x = 8,077.86

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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.