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Finding the Fourth Proportional to 19,958.76, 29,937.96 and 4,965.90

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Solution

The fourth proportional to 19,958.76, 29,937.96 and 4,965.90 is: 7,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.76 : 29,937.96 = 4,965.90 : x
  2. Step 2: Convert to fraction form
    19,958.76/29,937.96 = 4,965.90/x
  3. Step 3: Cross multiply
    19,958.76x = 29,937.96 × 4,965.90
  4. Step 4: Simplify right side
    19,958.76x = 148,668,915.56
  5. Step 5: Solve for x
    x = 148,668,915.56/19,958.76
  6. Step 6: Final answer
    x = 7,448.81

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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.