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Finding the Fourth Proportional to 19,982.49, 30,007.76 and 19,146.57

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Solution

The fourth proportional to 19,982.49, 30,007.76 and 19,146.57 is: 28,752.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.49 : 30,007.76 = 19,146.57 : x
  2. Step 2: Convert to fraction form
    19,982.49/30,007.76 = 19,146.57/x
  3. Step 3: Cross multiply
    19,982.49x = 30,007.76 × 19,146.57
  4. Step 4: Simplify right side
    19,982.49x = 574,545,581.65
  5. Step 5: Solve for x
    x = 574,545,581.65/19,982.49
  6. Step 6: Final answer
    x = 28,752.45

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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.