Home / 12,579.84-18,872.10-4,146.81

Finding the Fourth Proportional to 12,579.84, 18,872.10 and 4,146.81

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Solution

The fourth proportional to 12,579.84, 18,872.10 and 4,146.81 is: 6,220.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.84 : 18,872.10 = 4,146.81 : x
  2. Step 2: Convert to fraction form
    12,579.84/18,872.10 = 4,146.81/x
  3. Step 3: Cross multiply
    12,579.84x = 18,872.10 × 4,146.81
  4. Step 4: Simplify right side
    12,579.84x = 78,259,013.00
  5. Step 5: Solve for x
    x = 78,259,013.00/12,579.84
  6. Step 6: Final answer
    x = 6,220.99

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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.