Home / 19,786.86-27,305.61-11,288.76

Finding the Fourth Proportional to 19,786.86, 27,305.61 and 11,288.76

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Solution

The fourth proportional to 19,786.86, 27,305.61 and 11,288.76 is: 15,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.86 : 27,305.61 = 11,288.76 : x
  2. Step 2: Convert to fraction form
    19,786.86/27,305.61 = 11,288.76/x
  3. Step 3: Cross multiply
    19,786.86x = 27,305.61 × 11,288.76
  4. Step 4: Simplify right side
    19,786.86x = 308,246,477.94
  5. Step 5: Solve for x
    x = 308,246,477.94/19,786.86
  6. Step 6: Final answer
    x = 15,578.34

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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.