Home / 12,586.77-18,878.94-3,821.76

Finding the Fourth Proportional to 12,586.77, 18,878.94 and 3,821.76

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Solution

The fourth proportional to 12,586.77, 18,878.94 and 3,821.76 is: 5,732.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.77 : 18,878.94 = 3,821.76 : x
  2. Step 2: Convert to fraction form
    12,586.77/18,878.94 = 3,821.76/x
  3. Step 3: Cross multiply
    12,586.77x = 18,878.94 × 3,821.76
  4. Step 4: Simplify right side
    12,586.77x = 72,150,848.53
  5. Step 5: Solve for x
    x = 72,150,848.53/12,586.77
  6. Step 6: Final answer
    x = 5,732.28

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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.