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Finding the Fourth Proportional to 21,433.40, 32,150.10 and 18,841.40

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Solution

The fourth proportional to 21,433.40, 32,150.10 and 18,841.40 is: 28,262.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.40 : 32,150.10 = 18,841.40 : x
  2. Step 2: Convert to fraction form
    21,433.40/32,150.10 = 18,841.40/x
  3. Step 3: Cross multiply
    21,433.40x = 32,150.10 × 18,841.40
  4. Step 4: Simplify right side
    21,433.40x = 605,752,894.14
  5. Step 5: Solve for x
    x = 605,752,894.14/21,433.40
  6. Step 6: Final answer
    x = 28,262.10

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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.