Home / 12,879.05-17,730.23-11,550.47

Finding the Fourth Proportional to 12,879.05, 17,730.23 and 11,550.47

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Solution

The fourth proportional to 12,879.05, 17,730.23 and 11,550.47 is: 15,901.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.05 : 17,730.23 = 11,550.47 : x
  2. Step 2: Convert to fraction form
    12,879.05/17,730.23 = 11,550.47/x
  3. Step 3: Cross multiply
    12,879.05x = 17,730.23 × 11,550.47
  4. Step 4: Simplify right side
    12,879.05x = 204,792,343.30
  5. Step 5: Solve for x
    x = 204,792,343.30/12,879.05
  6. Step 6: Final answer
    x = 15,901.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.