Home / 21,093.72-29,108.42-12,135.12

Finding the Fourth Proportional to 21,093.72, 29,108.42 and 12,135.12

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Solution

The fourth proportional to 21,093.72, 29,108.42 and 12,135.12 is: 16,745.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.72 : 29,108.42 = 12,135.12 : x
  2. Step 2: Convert to fraction form
    21,093.72/29,108.42 = 12,135.12/x
  3. Step 3: Cross multiply
    21,093.72x = 29,108.42 × 12,135.12
  4. Step 4: Simplify right side
    21,093.72x = 353,234,169.71
  5. Step 5: Solve for x
    x = 353,234,169.71/21,093.72
  6. Step 6: Final answer
    x = 16,745.94

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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.