Home / 20,716.62-28,588.32-11,518.13

Finding the Fourth Proportional to 20,716.62, 28,588.32 and 11,518.13

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Solution

The fourth proportional to 20,716.62, 28,588.32 and 11,518.13 is: 15,894.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.62 : 28,588.32 = 11,518.13 : x
  2. Step 2: Convert to fraction form
    20,716.62/28,588.32 = 11,518.13/x
  3. Step 3: Cross multiply
    20,716.62x = 28,588.32 × 11,518.13
  4. Step 4: Simplify right side
    20,716.62x = 329,283,843.30
  5. Step 5: Solve for x
    x = 329,283,843.30/20,716.62
  6. Step 6: Final answer
    x = 15,894.67

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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.