Home / 21,135.63-29,168.04-11,704.19

Finding the Fourth Proportional to 21,135.63, 29,168.04 and 11,704.19

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Solution

The fourth proportional to 21,135.63, 29,168.04 and 11,704.19 is: 16,152.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.63 : 29,168.04 = 11,704.19 : x
  2. Step 2: Convert to fraction form
    21,135.63/29,168.04 = 11,704.19/x
  3. Step 3: Cross multiply
    21,135.63x = 29,168.04 × 11,704.19
  4. Step 4: Simplify right side
    21,135.63x = 341,388,136.25
  5. Step 5: Solve for x
    x = 341,388,136.25/21,135.63
  6. Step 6: Final answer
    x = 16,152.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.