Home / 30,990.84-46,371.42-18,517.65

Finding the Fourth Proportional to 30,990.84, 46,371.42 and 18,517.65

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Solution

The fourth proportional to 30,990.84, 46,371.42 and 18,517.65 is: 27,707.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.84 : 46,371.42 = 18,517.65 : x
  2. Step 2: Convert to fraction form
    30,990.84/46,371.42 = 18,517.65/x
  3. Step 3: Cross multiply
    30,990.84x = 46,371.42 × 18,517.65
  4. Step 4: Simplify right side
    30,990.84x = 858,689,725.56
  5. Step 5: Solve for x
    x = 858,689,725.56/30,990.84
  6. Step 6: Final answer
    x = 27,707.86

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1.5x scale

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.