Home / 20,996.96-28,973.40-12,042

Finding the Fourth Proportional to 20,996.96, 28,973.40 and 12,042

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Solution

The fourth proportional to 20,996.96, 28,973.40 and 12,042 is: 16,616.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.96 : 28,973.40 = 12,042 : x
  2. Step 2: Convert to fraction form
    20,996.96/28,973.40 = 12,042/x
  3. Step 3: Cross multiply
    20,996.96x = 28,973.40 × 12,042
  4. Step 4: Simplify right side
    20,996.96x = 348,897,682.80
  5. Step 5: Solve for x
    x = 348,897,682.80/20,996.96
  6. Step 6: Final answer
    x = 16,616.58

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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.