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Finding the Fourth Proportional to 13,331.87, 19,955.87 and 9,147.41

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Solution

The fourth proportional to 13,331.87, 19,955.87 and 9,147.41 is: 13,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.87 : 19,955.87 = 9,147.41 : x
  2. Step 2: Convert to fraction form
    13,331.87/19,955.87 = 9,147.41/x
  3. Step 3: Cross multiply
    13,331.87x = 19,955.87 × 9,147.41
  4. Step 4: Simplify right side
    13,331.87x = 182,544,524.80
  5. Step 5: Solve for x
    x = 182,544,524.80/13,331.87
  6. Step 6: Final answer
    x = 13,692.34

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1.5x scale

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.