Home / 31,119.29-42,932.38-19,161.87

Finding the Fourth Proportional to 31,119.29, 42,932.38 and 19,161.87

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Solution

The fourth proportional to 31,119.29, 42,932.38 and 19,161.87 is: 26,435.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.29 : 42,932.38 = 19,161.87 : x
  2. Step 2: Convert to fraction form
    31,119.29/42,932.38 = 19,161.87/x
  3. Step 3: Cross multiply
    31,119.29x = 42,932.38 × 19,161.87
  4. Step 4: Simplify right side
    31,119.29x = 822,664,511.38
  5. Step 5: Solve for x
    x = 822,664,511.38/31,119.29
  6. Step 6: Final answer
    x = 26,435.84

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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.