Home / 28,211.94-38,843.69-21,475.98

Finding the Fourth Proportional to 28,211.94, 38,843.69 and 21,475.98

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Solution

The fourth proportional to 28,211.94, 38,843.69 and 21,475.98 is: 29,569.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.94 : 38,843.69 = 21,475.98 : x
  2. Step 2: Convert to fraction form
    28,211.94/38,843.69 = 21,475.98/x
  3. Step 3: Cross multiply
    28,211.94x = 38,843.69 × 21,475.98
  4. Step 4: Simplify right side
    28,211.94x = 834,206,202.19
  5. Step 5: Solve for x
    x = 834,206,202.19/28,211.94
  6. Step 6: Final answer
    x = 29,569.26

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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.