Home / 13,135.44-18,121.11-8,884.98

Finding the Fourth Proportional to 13,135.44, 18,121.11 and 8,884.98

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Solution

The fourth proportional to 13,135.44, 18,121.11 and 8,884.98 is: 12,257.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.44 : 18,121.11 = 8,884.98 : x
  2. Step 2: Convert to fraction form
    13,135.44/18,121.11 = 8,884.98/x
  3. Step 3: Cross multiply
    13,135.44x = 18,121.11 × 8,884.98
  4. Step 4: Simplify right side
    13,135.44x = 161,005,699.93
  5. Step 5: Solve for x
    x = 161,005,699.93/13,135.44
  6. Step 6: Final answer
    x = 12,257.35

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1.5x scale

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.