Home / 13,113.20-18,096.42-7,144.87

Finding the Fourth Proportional to 13,113.20, 18,096.42 and 7,144.87

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Solution

The fourth proportional to 13,113.20, 18,096.42 and 7,144.87 is: 9,860.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.20 : 18,096.42 = 7,144.87 : x
  2. Step 2: Convert to fraction form
    13,113.20/18,096.42 = 7,144.87/x
  3. Step 3: Cross multiply
    13,113.20x = 18,096.42 × 7,144.87
  4. Step 4: Simplify right side
    13,113.20x = 129,296,568.37
  5. Step 5: Solve for x
    x = 129,296,568.37/13,113.20
  6. Step 6: Final answer
    x = 9,860.03

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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.