Home / 12,557.21-18,828.98-3,790.99

Finding the Fourth Proportional to 12,557.21, 18,828.98 and 3,790.99

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Solution

The fourth proportional to 12,557.21, 18,828.98 and 3,790.99 is: 5,684.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,557.21 : 18,828.98 = 3,790.99 : x
  2. Step 2: Convert to fraction form
    12,557.21/18,828.98 = 3,790.99/x
  3. Step 3: Cross multiply
    12,557.21x = 18,828.98 × 3,790.99
  4. Step 4: Simplify right side
    12,557.21x = 71,380,408.86
  5. Step 5: Solve for x
    x = 71,380,408.86/12,557.21
  6. Step 6: Final answer
    x = 5,684.42

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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.