Home / 21,168.72-29,212.68-11,737.32

Finding the Fourth Proportional to 21,168.72, 29,212.68 and 11,737.32

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Solution

The fourth proportional to 21,168.72, 29,212.68 and 11,737.32 is: 16,197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.72 : 29,212.68 = 11,737.32 : x
  2. Step 2: Convert to fraction form
    21,168.72/29,212.68 = 11,737.32/x
  3. Step 3: Cross multiply
    21,168.72x = 29,212.68 × 11,737.32
  4. Step 4: Simplify right side
    21,168.72x = 342,878,573.22
  5. Step 5: Solve for x
    x = 342,878,573.22/21,168.72
  6. Step 6: Final answer
    x = 16,197.42

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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.