Home / 21,571.36-32,361.90-8,427.48

Finding the Fourth Proportional to 21,571.36, 32,361.90 and 8,427.48

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Solution

The fourth proportional to 21,571.36, 32,361.90 and 8,427.48 is: 12,643.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.36 : 32,361.90 = 8,427.48 : x
  2. Step 2: Convert to fraction form
    21,571.36/32,361.90 = 8,427.48/x
  3. Step 3: Cross multiply
    21,571.36x = 32,361.90 × 8,427.48
  4. Step 4: Simplify right side
    21,571.36x = 272,729,265.01
  5. Step 5: Solve for x
    x = 272,729,265.01/21,571.36
  6. Step 6: Final answer
    x = 12,643.12

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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.