Home / 20,924.19-28,874.34-11,493.09

Finding the Fourth Proportional to 20,924.19, 28,874.34 and 11,493.09

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Solution

The fourth proportional to 20,924.19, 28,874.34 and 11,493.09 is: 15,859.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.19 : 28,874.34 = 11,493.09 : x
  2. Step 2: Convert to fraction form
    20,924.19/28,874.34 = 11,493.09/x
  3. Step 3: Cross multiply
    20,924.19x = 28,874.34 × 11,493.09
  4. Step 4: Simplify right side
    20,924.19x = 331,855,388.31
  5. Step 5: Solve for x
    x = 331,855,388.31/20,924.19
  6. Step 6: Final answer
    x = 15,859.89

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Double scale
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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.