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Finding the Fourth Proportional to 18,954.48, 28,431.72 and 17,526

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Solution

The fourth proportional to 18,954.48, 28,431.72 and 17,526 is: 26,289.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.48 : 28,431.72 = 17,526 : x
  2. Step 2: Convert to fraction form
    18,954.48/28,431.72 = 17,526/x
  3. Step 3: Cross multiply
    18,954.48x = 28,431.72 × 17,526
  4. Step 4: Simplify right side
    18,954.48x = 498,294,324.72
  5. Step 5: Solve for x
    x = 498,294,324.72/18,954.48
  6. Step 6: Final answer
    x = 26,289.00

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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.