Home / 21,571.53-32,315.81-13,227.21

Finding the Fourth Proportional to 21,571.53, 32,315.81 and 13,227.21

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Solution

The fourth proportional to 21,571.53, 32,315.81 and 13,227.21 is: 19,815.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.53 : 32,315.81 = 13,227.21 : x
  2. Step 2: Convert to fraction form
    21,571.53/32,315.81 = 13,227.21/x
  3. Step 3: Cross multiply
    21,571.53x = 32,315.81 × 13,227.21
  4. Step 4: Simplify right side
    21,571.53x = 427,447,939.05
  5. Step 5: Solve for x
    x = 427,447,939.05/21,571.53
  6. Step 6: Final answer
    x = 19,815.37

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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.