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Finding the Fourth Proportional to 19,300.26, 28,905.02 and 9,408.54

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Solution

The fourth proportional to 19,300.26, 28,905.02 and 9,408.54 is: 14,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,300.26 : 28,905.02 = 9,408.54 : x
  2. Step 2: Convert to fraction form
    19,300.26/28,905.02 = 9,408.54/x
  3. Step 3: Cross multiply
    19,300.26x = 28,905.02 × 9,408.54
  4. Step 4: Simplify right side
    19,300.26x = 271,954,036.87
  5. Step 5: Solve for x
    x = 271,954,036.87/19,300.26
  6. Step 6: Final answer
    x = 14,090.69

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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.