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Finding the Fourth Proportional to 21,365.48, 32,052.78 and 7,321.74

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Solution

The fourth proportional to 21,365.48, 32,052.78 and 7,321.74 is: 10,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.48 : 32,052.78 = 7,321.74 : x
  2. Step 2: Convert to fraction form
    21,365.48/32,052.78 = 7,321.74/x
  3. Step 3: Cross multiply
    21,365.48x = 32,052.78 × 7,321.74
  4. Step 4: Simplify right side
    21,365.48x = 234,682,121.44
  5. Step 5: Solve for x
    x = 234,682,121.44/21,365.48
  6. Step 6: Final answer
    x = 10,984.17

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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.