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Finding the Fourth Proportional to 19,158.68, 28,738.76 and 6,679.97

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Solution

The fourth proportional to 19,158.68, 28,738.76 and 6,679.97 is: 10,020.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.68 : 28,738.76 = 6,679.97 : x
  2. Step 2: Convert to fraction form
    19,158.68/28,738.76 = 6,679.97/x
  3. Step 3: Cross multiply
    19,158.68x = 28,738.76 × 6,679.97
  4. Step 4: Simplify right side
    19,158.68x = 191,973,877.54
  5. Step 5: Solve for x
    x = 191,973,877.54/19,158.68
  6. Step 6: Final answer
    x = 10,020.21

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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.