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Finding the Fourth Proportional to 21,736.49, 29,995.91 and 11,800.49

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Solution

The fourth proportional to 21,736.49, 29,995.91 and 11,800.49 is: 16,284.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,736.49 : 29,995.91 = 11,800.49 : x
  2. Step 2: Convert to fraction form
    21,736.49/29,995.91 = 11,800.49/x
  3. Step 3: Cross multiply
    21,736.49x = 29,995.91 × 11,800.49
  4. Step 4: Simplify right side
    21,736.49x = 353,966,376.99
  5. Step 5: Solve for x
    x = 353,966,376.99/21,736.49
  6. Step 6: Final answer
    x = 16,284.43

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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.