Home / 30,871.40-46,257.89-19,768.95

Finding the Fourth Proportional to 30,871.40, 46,257.89 and 19,768.95

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Solution

The fourth proportional to 30,871.40, 46,257.89 and 19,768.95 is: 29,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.40 : 46,257.89 = 19,768.95 : x
  2. Step 2: Convert to fraction form
    30,871.40/46,257.89 = 19,768.95/x
  3. Step 3: Cross multiply
    30,871.40x = 46,257.89 × 19,768.95
  4. Step 4: Simplify right side
    30,871.40x = 914,469,815.67
  5. Step 5: Solve for x
    x = 914,469,815.67/30,871.40
  6. Step 6: Final answer
    x = 29,621.91

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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.