Home / 12,579.41-18,868.93-3,219.35

Finding the Fourth Proportional to 12,579.41, 18,868.93 and 3,219.35

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Solution

The fourth proportional to 12,579.41, 18,868.93 and 3,219.35 is: 4,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.41 : 18,868.93 = 3,219.35 : x
  2. Step 2: Convert to fraction form
    12,579.41/18,868.93 = 3,219.35/x
  3. Step 3: Cross multiply
    12,579.41x = 18,868.93 × 3,219.35
  4. Step 4: Simplify right side
    12,579.41x = 60,745,728.92
  5. Step 5: Solve for x
    x = 60,745,728.92/12,579.41
  6. Step 6: Final answer
    x = 4,828.98

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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.