Home / 21,296.60-31,933.80-7,958.63

Finding the Fourth Proportional to 21,296.60, 31,933.80 and 7,958.63

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Solution

The fourth proportional to 21,296.60, 31,933.80 and 7,958.63 is: 11,933.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.60 : 31,933.80 = 7,958.63 : x
  2. Step 2: Convert to fraction form
    21,296.60/31,933.80 = 7,958.63/x
  3. Step 3: Cross multiply
    21,296.60x = 31,933.80 × 7,958.63
  4. Step 4: Simplify right side
    21,296.60x = 254,149,348.68
  5. Step 5: Solve for x
    x = 254,149,348.68/21,296.60
  6. Step 6: Final answer
    x = 11,933.80

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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.