Home / 21,369.84-29,488.44-11,936.64

Finding the Fourth Proportional to 21,369.84, 29,488.44 and 11,936.64

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Solution

The fourth proportional to 21,369.84, 29,488.44 and 11,936.64 is: 16,471.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.84 : 29,488.44 = 11,936.64 : x
  2. Step 2: Convert to fraction form
    21,369.84/29,488.44 = 11,936.64/x
  3. Step 3: Cross multiply
    21,369.84x = 29,488.44 × 11,936.64
  4. Step 4: Simplify right side
    21,369.84x = 351,992,892.44
  5. Step 5: Solve for x
    x = 351,992,892.44/21,369.84
  6. Step 6: Final answer
    x = 16,471.48

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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.