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Finding the Fourth Proportional to 19,954.79, 29,913.13 and 7,471.88

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Solution

The fourth proportional to 19,954.79, 29,913.13 and 7,471.88 is: 11,200.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,954.79 : 29,913.13 = 7,471.88 : x
  2. Step 2: Convert to fraction form
    19,954.79/29,913.13 = 7,471.88/x
  3. Step 3: Cross multiply
    19,954.79x = 29,913.13 × 7,471.88
  4. Step 4: Simplify right side
    19,954.79x = 223,507,289.73
  5. Step 5: Solve for x
    x = 223,507,289.73/19,954.79
  6. Step 6: Final answer
    x = 11,200.68

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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.