Home / 20,806.08-31,252.05-19,907.79

Finding the Fourth Proportional to 20,806.08, 31,252.05 and 19,907.79

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Solution

The fourth proportional to 20,806.08, 31,252.05 and 19,907.79 is: 29,902.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.08 : 31,252.05 = 19,907.79 : x
  2. Step 2: Convert to fraction form
    20,806.08/31,252.05 = 19,907.79/x
  3. Step 3: Cross multiply
    20,806.08x = 31,252.05 × 19,907.79
  4. Step 4: Simplify right side
    20,806.08x = 622,159,248.47
  5. Step 5: Solve for x
    x = 622,159,248.47/20,806.08
  6. Step 6: Final answer
    x = 29,902.76

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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.