Home / 12,689.61-19,033.97-3,329.56

Finding the Fourth Proportional to 12,689.61, 19,033.97 and 3,329.56

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Solution

The fourth proportional to 12,689.61, 19,033.97 and 3,329.56 is: 4,994.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.61 : 19,033.97 = 3,329.56 : x
  2. Step 2: Convert to fraction form
    12,689.61/19,033.97 = 3,329.56/x
  3. Step 3: Cross multiply
    12,689.61x = 19,033.97 × 3,329.56
  4. Step 4: Simplify right side
    12,689.61x = 63,374,705.89
  5. Step 5: Solve for x
    x = 63,374,705.89/12,689.61
  6. Step 6: Final answer
    x = 4,994.22

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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.