Home / 15,759.36-21,779.26-12,922.33

Finding the Fourth Proportional to 15,759.36, 21,779.26 and 12,922.33

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Solution

The fourth proportional to 15,759.36, 21,779.26 and 12,922.33 is: 17,858.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.36 : 21,779.26 = 12,922.33 : x
  2. Step 2: Convert to fraction form
    15,759.36/21,779.26 = 12,922.33/x
  3. Step 3: Cross multiply
    15,759.36x = 21,779.26 × 12,922.33
  4. Step 4: Simplify right side
    15,759.36x = 281,438,784.88
  5. Step 5: Solve for x
    x = 281,438,784.88/15,759.36
  6. Step 6: Final answer
    x = 17,858.52

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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.