Home / 13,142.11-18,135.97-7,173.73

Finding the Fourth Proportional to 13,142.11, 18,135.97 and 7,173.73

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Solution

The fourth proportional to 13,142.11, 18,135.97 and 7,173.73 is: 9,899.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.11 : 18,135.97 = 7,173.73 : x
  2. Step 2: Convert to fraction form
    13,142.11/18,135.97 = 7,173.73/x
  3. Step 3: Cross multiply
    13,142.11x = 18,135.97 × 7,173.73
  4. Step 4: Simplify right side
    13,142.11x = 130,102,552.07
  5. Step 5: Solve for x
    x = 130,102,552.07/13,142.11
  6. Step 6: Final answer
    x = 9,899.67

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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.