Home / 13,138.44-18,125.25-8,887.98

Finding the Fourth Proportional to 13,138.44, 18,125.25 and 8,887.98

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Solution

The fourth proportional to 13,138.44, 18,125.25 and 8,887.98 is: 12,261.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.44 : 18,125.25 = 8,887.98 : x
  2. Step 2: Convert to fraction form
    13,138.44/18,125.25 = 8,887.98/x
  3. Step 3: Cross multiply
    13,138.44x = 18,125.25 × 8,887.98
  4. Step 4: Simplify right side
    13,138.44x = 161,096,859.50
  5. Step 5: Solve for x
    x = 161,096,859.50/13,138.44
  6. Step 6: Final answer
    x = 12,261.49

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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.