Home / 13,669.41-18,871.98-8,961.90

Finding the Fourth Proportional to 13,669.41, 18,871.98 and 8,961.90

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Solution

The fourth proportional to 13,669.41, 18,871.98 and 8,961.90 is: 12,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.41 : 18,871.98 = 8,961.90 : x
  2. Step 2: Convert to fraction form
    13,669.41/18,871.98 = 8,961.90/x
  3. Step 3: Cross multiply
    13,669.41x = 18,871.98 × 8,961.90
  4. Step 4: Simplify right side
    13,669.41x = 169,128,797.56
  5. Step 5: Solve for x
    x = 169,128,797.56/13,669.41
  6. Step 6: Final answer
    x = 12,372.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.