Home / 21,168.09-29,213.69-11,736.45

Finding the Fourth Proportional to 21,168.09, 29,213.69 and 11,736.45

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Solution

The fourth proportional to 21,168.09, 29,213.69 and 11,736.45 is: 16,197.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.09 : 29,213.69 = 11,736.45 : x
  2. Step 2: Convert to fraction form
    21,168.09/29,213.69 = 11,736.45/x
  3. Step 3: Cross multiply
    21,168.09x = 29,213.69 × 11,736.45
  4. Step 4: Simplify right side
    21,168.09x = 342,864,953.32
  5. Step 5: Solve for x
    x = 342,864,953.32/21,168.09
  6. Step 6: Final answer
    x = 16,197.26

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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.