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Finding the Fourth Proportional to 27,879.34, 38,420.34 and 27,366.96

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Solution

The fourth proportional to 27,879.34, 38,420.34 and 27,366.96 is: 37,714.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.34 : 38,420.34 = 27,366.96 : x
  2. Step 2: Convert to fraction form
    27,879.34/38,420.34 = 27,366.96/x
  3. Step 3: Cross multiply
    27,879.34x = 38,420.34 × 27,366.96
  4. Step 4: Simplify right side
    27,879.34x = 1,051,447,907.97
  5. Step 5: Solve for x
    x = 1,051,447,907.97/27,879.34
  6. Step 6: Final answer
    x = 37,714.23

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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.