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Finding the Fourth Proportional to 17,038.78, 25,428.61 and 15,910.78

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Solution

The fourth proportional to 17,038.78, 25,428.61 and 15,910.78 is: 23,745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,038.78 : 25,428.61 = 15,910.78 : x
  2. Step 2: Convert to fraction form
    17,038.78/25,428.61 = 15,910.78/x
  3. Step 3: Cross multiply
    17,038.78x = 25,428.61 × 15,910.78
  4. Step 4: Simplify right side
    17,038.78x = 404,589,019.42
  5. Step 5: Solve for x
    x = 404,589,019.42/17,038.78
  6. Step 6: Final answer
    x = 23,745.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.