Home / 21,290.37-31,907.26-11,293.06

Finding the Fourth Proportional to 21,290.37, 31,907.26 and 11,293.06

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Solution

The fourth proportional to 21,290.37, 31,907.26 and 11,293.06 is: 16,924.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.37 : 31,907.26 = 11,293.06 : x
  2. Step 2: Convert to fraction form
    21,290.37/31,907.26 = 11,293.06/x
  3. Step 3: Cross multiply
    21,290.37x = 31,907.26 × 11,293.06
  4. Step 4: Simplify right side
    21,290.37x = 360,330,601.62
  5. Step 5: Solve for x
    x = 360,330,601.62/21,290.37
  6. Step 6: Final answer
    x = 16,924.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.