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Finding the Fourth Proportional to 20,070.92, 27,698.82 and 11,690.12

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Solution

The fourth proportional to 20,070.92, 27,698.82 and 11,690.12 is: 16,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.92 : 27,698.82 = 11,690.12 : x
  2. Step 2: Convert to fraction form
    20,070.92/27,698.82 = 11,690.12/x
  3. Step 3: Cross multiply
    20,070.92x = 27,698.82 × 11,690.12
  4. Step 4: Simplify right side
    20,070.92x = 323,802,529.66
  5. Step 5: Solve for x
    x = 323,802,529.66/20,070.92
  6. Step 6: Final answer
    x = 16,132.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.