Home / 28,640.40-43,009.20-27,765.60

Finding the Fourth Proportional to 28,640.40, 43,009.20 and 27,765.60

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Solution

The fourth proportional to 28,640.40, 43,009.20 and 27,765.60 is: 41,695.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,640.40 : 43,009.20 = 27,765.60 : x
  2. Step 2: Convert to fraction form
    28,640.40/43,009.20 = 27,765.60/x
  3. Step 3: Cross multiply
    28,640.40x = 43,009.20 × 27,765.60
  4. Step 4: Simplify right side
    28,640.40x = 1,194,176,243.52
  5. Step 5: Solve for x
    x = 1,194,176,243.52/28,640.40
  6. Step 6: Final answer
    x = 41,695.52

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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.