Home / 20,134.77-27,788.43-12,179.35

Finding the Fourth Proportional to 20,134.77, 27,788.43 and 12,179.35

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Solution

The fourth proportional to 20,134.77, 27,788.43 and 12,179.35 is: 16,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.77 : 27,788.43 = 12,179.35 : x
  2. Step 2: Convert to fraction form
    20,134.77/27,788.43 = 12,179.35/x
  3. Step 3: Cross multiply
    20,134.77x = 27,788.43 × 12,179.35
  4. Step 4: Simplify right side
    20,134.77x = 338,445,014.92
  5. Step 5: Solve for x
    x = 338,445,014.92/20,134.77
  6. Step 6: Final answer
    x = 16,808.98

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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.