Home / 13,416.99-20,119.32-4,981.38

Finding the Fourth Proportional to 13,416.99, 20,119.32 and 4,981.38

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Solution

The fourth proportional to 13,416.99, 20,119.32 and 4,981.38 is: 7,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.99 : 20,119.32 = 4,981.38 : x
  2. Step 2: Convert to fraction form
    13,416.99/20,119.32 = 4,981.38/x
  3. Step 3: Cross multiply
    13,416.99x = 20,119.32 × 4,981.38
  4. Step 4: Simplify right side
    13,416.99x = 100,221,978.26
  5. Step 5: Solve for x
    x = 100,221,978.26/13,416.99
  6. Step 6: Final answer
    x = 7,469.78

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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.