Home / 21,223-29,290.98-12,844.36

Finding the Fourth Proportional to 21,223, 29,290.98 and 12,844.36

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Solution

The fourth proportional to 21,223, 29,290.98 and 12,844.36 is: 17,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223 : 29,290.98 = 12,844.36 : x
  2. Step 2: Convert to fraction form
    21,223/29,290.98 = 12,844.36/x
  3. Step 3: Cross multiply
    21,223x = 29,290.98 × 12,844.36
  4. Step 4: Simplify right side
    21,223x = 376,223,891.87
  5. Step 5: Solve for x
    x = 376,223,891.87/21,223
  6. Step 6: Final answer
    x = 17,727.18

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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.