Home / 13,704.05-18,911.59-7,416.42

Finding the Fourth Proportional to 13,704.05, 18,911.59 and 7,416.42

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Solution

The fourth proportional to 13,704.05, 18,911.59 and 7,416.42 is: 10,234.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.05 : 18,911.59 = 7,416.42 : x
  2. Step 2: Convert to fraction form
    13,704.05/18,911.59 = 7,416.42/x
  3. Step 3: Cross multiply
    13,704.05x = 18,911.59 × 7,416.42
  4. Step 4: Simplify right side
    13,704.05x = 140,256,363.21
  5. Step 5: Solve for x
    x = 140,256,363.21/13,704.05
  6. Step 6: Final answer
    x = 10,234.67

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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.