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Finding the Fourth Proportional to 19,954.76, 29,940.78 and 7,651.40

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Solution

The fourth proportional to 19,954.76, 29,940.78 and 7,651.40 is: 11,480.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,954.76 : 29,940.78 = 7,651.40 : x
  2. Step 2: Convert to fraction form
    19,954.76/29,940.78 = 7,651.40/x
  3. Step 3: Cross multiply
    19,954.76x = 29,940.78 × 7,651.40
  4. Step 4: Simplify right side
    19,954.76x = 229,088,884.09
  5. Step 5: Solve for x
    x = 229,088,884.09/19,954.76
  6. Step 6: Final answer
    x = 11,480.41

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Why These Related Problems?

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