Home / 20,212.83-27,893.70-11,719.89

Finding the Fourth Proportional to 20,212.83, 27,893.70 and 11,719.89

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Solution

The fourth proportional to 20,212.83, 27,893.70 and 11,719.89 is: 16,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.83 : 27,893.70 = 11,719.89 : x
  2. Step 2: Convert to fraction form
    20,212.83/27,893.70 = 11,719.89/x
  3. Step 3: Cross multiply
    20,212.83x = 27,893.70 × 11,719.89
  4. Step 4: Simplify right side
    20,212.83x = 326,911,095.69
  5. Step 5: Solve for x
    x = 326,911,095.69/20,212.83
  6. Step 6: Final answer
    x = 16,173.45

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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.