Home / 21,584.75-29,784.80-15,922.56

Finding the Fourth Proportional to 21,584.75, 29,784.80 and 15,922.56

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Solution

The fourth proportional to 21,584.75, 29,784.80 and 15,922.56 is: 21,971.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,584.75 : 29,784.80 = 15,922.56 : x
  2. Step 2: Convert to fraction form
    21,584.75/29,784.80 = 15,922.56/x
  3. Step 3: Cross multiply
    21,584.75x = 29,784.80 × 15,922.56
  4. Step 4: Simplify right side
    21,584.75x = 474,250,185.48
  5. Step 5: Solve for x
    x = 474,250,185.48/21,584.75
  6. Step 6: Final answer
    x = 21,971.54

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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.