Home / 15,579.21-23,249.57-13,917.09

Finding the Fourth Proportional to 15,579.21, 23,249.57 and 13,917.09

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Solution

The fourth proportional to 15,579.21, 23,249.57 and 13,917.09 is: 20,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.21 : 23,249.57 = 13,917.09 : x
  2. Step 2: Convert to fraction form
    15,579.21/23,249.57 = 13,917.09/x
  3. Step 3: Cross multiply
    15,579.21x = 23,249.57 × 13,917.09
  4. Step 4: Simplify right side
    15,579.21x = 323,566,358.15
  5. Step 5: Solve for x
    x = 323,566,358.15/15,579.21
  6. Step 6: Final answer
    x = 20,769.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.