Home / 19,300.97-28,935.99-12,678.68

Finding the Fourth Proportional to 19,300.97, 28,935.99 and 12,678.68

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Solution

The fourth proportional to 19,300.97, 28,935.99 and 12,678.68 is: 19,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,300.97 : 28,935.99 = 12,678.68 : x
  2. Step 2: Convert to fraction form
    19,300.97/28,935.99 = 12,678.68/x
  3. Step 3: Cross multiply
    19,300.97x = 28,935.99 × 12,678.68
  4. Step 4: Simplify right side
    19,300.97x = 366,870,013.01
  5. Step 5: Solve for x
    x = 366,870,013.01/19,300.97
  6. Step 6: Final answer
    x = 19,007.86

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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.