Home / 19,790.45-27,313.41-11,290.61

Finding the Fourth Proportional to 19,790.45, 27,313.41 and 11,290.61

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Solution

The fourth proportional to 19,790.45, 27,313.41 and 11,290.61 is: 15,582.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.45 : 27,313.41 = 11,290.61 : x
  2. Step 2: Convert to fraction form
    19,790.45/27,313.41 = 11,290.61/x
  3. Step 3: Cross multiply
    19,790.45x = 27,313.41 × 11,290.61
  4. Step 4: Simplify right side
    19,790.45x = 308,384,923.51
  5. Step 5: Solve for x
    x = 308,384,923.51/19,790.45
  6. Step 6: Final answer
    x = 15,582.52

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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.