Home / 19,198.65-28,732.95-11,807.79

Finding the Fourth Proportional to 19,198.65, 28,732.95 and 11,807.79

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Solution

The fourth proportional to 19,198.65, 28,732.95 and 11,807.79 is: 17,671.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.65 : 28,732.95 = 11,807.79 : x
  2. Step 2: Convert to fraction form
    19,198.65/28,732.95 = 11,807.79/x
  3. Step 3: Cross multiply
    19,198.65x = 28,732.95 × 11,807.79
  4. Step 4: Simplify right side
    19,198.65x = 339,272,639.68
  5. Step 5: Solve for x
    x = 339,272,639.68/19,198.65
  6. Step 6: Final answer
    x = 17,671.69

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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.