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Finding the Fourth Proportional to 21,828.44, 32,745.08 and 7,791.74

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Solution

The fourth proportional to 21,828.44, 32,745.08 and 7,791.74 is: 11,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.44 : 32,745.08 = 7,791.74 : x
  2. Step 2: Convert to fraction form
    21,828.44/32,745.08 = 7,791.74/x
  3. Step 3: Cross multiply
    21,828.44x = 32,745.08 × 7,791.74
  4. Step 4: Simplify right side
    21,828.44x = 255,141,149.64
  5. Step 5: Solve for x
    x = 255,141,149.64/21,828.44
  6. Step 6: Final answer
    x = 11,688.47

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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.