Home / 21,379.52-32,077.79-8,228.36

Finding the Fourth Proportional to 21,379.52, 32,077.79 and 8,228.36

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Solution

The fourth proportional to 21,379.52, 32,077.79 and 8,228.36 is: 12,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.52 : 32,077.79 = 8,228.36 : x
  2. Step 2: Convert to fraction form
    21,379.52/32,077.79 = 8,228.36/x
  3. Step 3: Cross multiply
    21,379.52x = 32,077.79 × 8,228.36
  4. Step 4: Simplify right side
    21,379.52x = 263,947,604.12
  5. Step 5: Solve for x
    x = 263,947,604.12/21,379.52
  6. Step 6: Final answer
    x = 12,345.82

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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.