Home / 20,927.66-31,305.20-19,159.42

Finding the Fourth Proportional to 20,927.66, 31,305.20 and 19,159.42

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Solution

The fourth proportional to 20,927.66, 31,305.20 and 19,159.42 is: 28,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.66 : 31,305.20 = 19,159.42 : x
  2. Step 2: Convert to fraction form
    20,927.66/31,305.20 = 19,159.42/x
  3. Step 3: Cross multiply
    20,927.66x = 31,305.20 × 19,159.42
  4. Step 4: Simplify right side
    20,927.66x = 599,789,474.98
  5. Step 5: Solve for x
    x = 599,789,474.98/20,927.66
  6. Step 6: Final answer
    x = 28,660.13

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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.