Home / 20,994.88-28,972-12,035.96

Finding the Fourth Proportional to 20,994.88, 28,972 and 12,035.96

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Solution

The fourth proportional to 20,994.88, 28,972 and 12,035.96 is: 16,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.88 : 28,972 = 12,035.96 : x
  2. Step 2: Convert to fraction form
    20,994.88/28,972 = 12,035.96/x
  3. Step 3: Cross multiply
    20,994.88x = 28,972 × 12,035.96
  4. Step 4: Simplify right side
    20,994.88x = 348,705,833.12
  5. Step 5: Solve for x
    x = 348,705,833.12/20,994.88
  6. Step 6: Final answer
    x = 16,609.09

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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.