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Finding the Fourth Proportional to 27,991.58, 41,989.59 and 9,270.86

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Solution

The fourth proportional to 27,991.58, 41,989.59 and 9,270.86 is: 13,907.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.58 : 41,989.59 = 9,270.86 : x
  2. Step 2: Convert to fraction form
    27,991.58/41,989.59 = 9,270.86/x
  3. Step 3: Cross multiply
    27,991.58x = 41,989.59 × 9,270.86
  4. Step 4: Simplify right side
    27,991.58x = 389,279,400.40
  5. Step 5: Solve for x
    x = 389,279,400.40/27,991.58
  6. Step 6: Final answer
    x = 13,907.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.