Home / 31,119.39-42,932.43-19,161.97

Finding the Fourth Proportional to 31,119.39, 42,932.43 and 19,161.97

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Solution

The fourth proportional to 31,119.39, 42,932.43 and 19,161.97 is: 26,435.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.39 : 42,932.43 = 19,161.97 : x
  2. Step 2: Convert to fraction form
    31,119.39/42,932.43 = 19,161.97/x
  3. Step 3: Cross multiply
    31,119.39x = 42,932.43 × 19,161.97
  4. Step 4: Simplify right side
    31,119.39x = 822,669,828.36
  5. Step 5: Solve for x
    x = 822,669,828.36/31,119.39
  6. Step 6: Final answer
    x = 26,435.92

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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.