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Finding the Fourth Proportional to 28,262.85, 38,994.75 and 18,197.12

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Solution

The fourth proportional to 28,262.85, 38,994.75 and 18,197.12 is: 25,106.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.85 : 38,994.75 = 18,197.12 : x
  2. Step 2: Convert to fraction form
    28,262.85/38,994.75 = 18,197.12/x
  3. Step 3: Cross multiply
    28,262.85x = 38,994.75 × 18,197.12
  4. Step 4: Simplify right side
    28,262.85x = 709,592,145.12
  5. Step 5: Solve for x
    x = 709,592,145.12/28,262.85
  6. Step 6: Final answer
    x = 25,106.89

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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.