Home / 19,172.38-28,732-14,488.56

Finding the Fourth Proportional to 19,172.38, 28,732 and 14,488.56

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Solution

The fourth proportional to 19,172.38, 28,732 and 14,488.56 is: 21,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.38 : 28,732 = 14,488.56 : x
  2. Step 2: Convert to fraction form
    19,172.38/28,732 = 14,488.56/x
  3. Step 3: Cross multiply
    19,172.38x = 28,732 × 14,488.56
  4. Step 4: Simplify right side
    19,172.38x = 416,285,305.92
  5. Step 5: Solve for x
    x = 416,285,305.92/19,172.38
  6. Step 6: Final answer
    x = 21,712.76

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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.