Home / 21,336.16-29,436.88-13,786.94

Finding the Fourth Proportional to 21,336.16, 29,436.88 and 13,786.94

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Solution

The fourth proportional to 21,336.16, 29,436.88 and 13,786.94 is: 19,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.16 : 29,436.88 = 13,786.94 : x
  2. Step 2: Convert to fraction form
    21,336.16/29,436.88 = 13,786.94/x
  3. Step 3: Cross multiply
    21,336.16x = 29,436.88 × 13,786.94
  4. Step 4: Simplify right side
    21,336.16x = 405,844,282.23
  5. Step 5: Solve for x
    x = 405,844,282.23/21,336.16
  6. Step 6: Final answer
    x = 19,021.43

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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.