Home / 31,386.57-46,961.82-18,689.73

Finding the Fourth Proportional to 31,386.57, 46,961.82 and 18,689.73

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Solution

The fourth proportional to 31,386.57, 46,961.82 and 18,689.73 is: 27,964.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.57 : 46,961.82 = 18,689.73 : x
  2. Step 2: Convert to fraction form
    31,386.57/46,961.82 = 18,689.73/x
  3. Step 3: Cross multiply
    31,386.57x = 46,961.82 × 18,689.73
  4. Step 4: Simplify right side
    31,386.57x = 877,703,736.11
  5. Step 5: Solve for x
    x = 877,703,736.11/31,386.57
  6. Step 6: Final answer
    x = 27,964.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.