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Finding the Fourth Proportional to 19,590.26, 27,022.82 and 18,278.06

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Solution

The fourth proportional to 19,590.26, 27,022.82 and 18,278.06 is: 25,212.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,590.26 : 27,022.82 = 18,278.06 : x
  2. Step 2: Convert to fraction form
    19,590.26/27,022.82 = 18,278.06/x
  3. Step 3: Cross multiply
    19,590.26x = 27,022.82 × 18,278.06
  4. Step 4: Simplify right side
    19,590.26x = 493,924,498.82
  5. Step 5: Solve for x
    x = 493,924,498.82/19,590.26
  6. Step 6: Final answer
    x = 25,212.77

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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.