Home / 20,716.36-28,579.99-11,756.49

Finding the Fourth Proportional to 20,716.36, 28,579.99 and 11,756.49

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Solution

The fourth proportional to 20,716.36, 28,579.99 and 11,756.49 is: 16,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.36 : 28,579.99 = 11,756.49 : x
  2. Step 2: Convert to fraction form
    20,716.36/28,579.99 = 11,756.49/x
  3. Step 3: Cross multiply
    20,716.36x = 28,579.99 × 11,756.49
  4. Step 4: Simplify right side
    20,716.36x = 336,000,412.87
  5. Step 5: Solve for x
    x = 336,000,412.87/20,716.36
  6. Step 6: Final answer
    x = 16,219.09

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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.