Home / 21,168-29,212.65-11,736.36

Finding the Fourth Proportional to 21,168, 29,212.65 and 11,736.36

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Solution

The fourth proportional to 21,168, 29,212.65 and 11,736.36 is: 16,196.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168 : 29,212.65 = 11,736.36 : x
  2. Step 2: Convert to fraction form
    21,168/29,212.65 = 11,736.36/x
  3. Step 3: Cross multiply
    21,168x = 29,212.65 × 11,736.36
  4. Step 4: Simplify right side
    21,168x = 342,850,176.95
  5. Step 5: Solve for x
    x = 342,850,176.95/21,168
  6. Step 6: Final answer
    x = 16,196.63

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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.