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Finding the Fourth Proportional to 36,012.86, 49,695.28 and 19,879.41

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Solution

The fourth proportional to 36,012.86, 49,695.28 and 19,879.41 is: 27,432.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,012.86 : 49,695.28 = 19,879.41 : x
  2. Step 2: Convert to fraction form
    36,012.86/49,695.28 = 19,879.41/x
  3. Step 3: Cross multiply
    36,012.86x = 49,695.28 × 19,879.41
  4. Step 4: Simplify right side
    36,012.86x = 987,912,846.18
  5. Step 5: Solve for x
    x = 987,912,846.18/36,012.86
  6. Step 6: Final answer
    x = 27,432.22

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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.