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Finding the Fourth Proportional to 20,590.58, 30,885.62 and 5,008.22

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Solution

The fourth proportional to 20,590.58, 30,885.62 and 5,008.22 is: 7,512.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.58 : 30,885.62 = 5,008.22 : x
  2. Step 2: Convert to fraction form
    20,590.58/30,885.62 = 5,008.22/x
  3. Step 3: Cross multiply
    20,590.58x = 30,885.62 × 5,008.22
  4. Step 4: Simplify right side
    20,590.58x = 154,681,979.80
  5. Step 5: Solve for x
    x = 154,681,979.80/20,590.58
  6. Step 6: Final answer
    x = 7,512.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.