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Finding the Fourth Proportional to 15,032.89, 20,745.07 and 8,226.89

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Solution

The fourth proportional to 15,032.89, 20,745.07 and 8,226.89 is: 11,352.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.89 : 20,745.07 = 8,226.89 : x
  2. Step 2: Convert to fraction form
    15,032.89/20,745.07 = 8,226.89/x
  3. Step 3: Cross multiply
    15,032.89x = 20,745.07 × 8,226.89
  4. Step 4: Simplify right side
    15,032.89x = 170,667,408.93
  5. Step 5: Solve for x
    x = 170,667,408.93/15,032.89
  6. Step 6: Final answer
    x = 11,352.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.