Home / 21,911.88-32,872.42-7,121.16

Finding the Fourth Proportional to 21,911.88, 32,872.42 and 7,121.16

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Solution

The fourth proportional to 21,911.88, 32,872.42 and 7,121.16 is: 10,683.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.88 : 32,872.42 = 7,121.16 : x
  2. Step 2: Convert to fraction form
    21,911.88/32,872.42 = 7,121.16/x
  3. Step 3: Cross multiply
    21,911.88x = 32,872.42 × 7,121.16
  4. Step 4: Simplify right side
    21,911.88x = 234,089,762.41
  5. Step 5: Solve for x
    x = 234,089,762.41/21,911.88
  6. Step 6: Final answer
    x = 10,683.23

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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.