Home / 21,270.96-29,355.08-11,839.73

Finding the Fourth Proportional to 21,270.96, 29,355.08 and 11,839.73

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Solution

The fourth proportional to 21,270.96, 29,355.08 and 11,839.73 is: 16,339.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.96 : 29,355.08 = 11,839.73 : x
  2. Step 2: Convert to fraction form
    21,270.96/29,355.08 = 11,839.73/x
  3. Step 3: Cross multiply
    21,270.96x = 29,355.08 × 11,839.73
  4. Step 4: Simplify right side
    21,270.96x = 347,556,015.35
  5. Step 5: Solve for x
    x = 347,556,015.35/21,270.96
  6. Step 6: Final answer
    x = 16,339.46

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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.