Home / 13,113.62-18,096.93-7,145.39

Finding the Fourth Proportional to 13,113.62, 18,096.93 and 7,145.39

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Solution

The fourth proportional to 13,113.62, 18,096.93 and 7,145.39 is: 9,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.62 : 18,096.93 = 7,145.39 : x
  2. Step 2: Convert to fraction form
    13,113.62/18,096.93 = 7,145.39/x
  3. Step 3: Cross multiply
    13,113.62x = 18,096.93 × 7,145.39
  4. Step 4: Simplify right side
    13,113.62x = 129,309,496.44
  5. Step 5: Solve for x
    x = 129,309,496.44/13,113.62
  6. Step 6: Final answer
    x = 9,860.71

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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.