Home / 21,840.75-32,761.13-5,424.75

Finding the Fourth Proportional to 21,840.75, 32,761.13 and 5,424.75

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Solution

The fourth proportional to 21,840.75, 32,761.13 and 5,424.75 is: 8,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,840.75 : 32,761.13 = 5,424.75 : x
  2. Step 2: Convert to fraction form
    21,840.75/32,761.13 = 5,424.75/x
  3. Step 3: Cross multiply
    21,840.75x = 32,761.13 × 5,424.75
  4. Step 4: Simplify right side
    21,840.75x = 177,720,912.84
  5. Step 5: Solve for x
    x = 177,720,912.84/21,840.75
  6. Step 6: Final answer
    x = 8,137.13

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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.