Home / 21,208.50-29,268.68-11,777.09

Finding the Fourth Proportional to 21,208.50, 29,268.68 and 11,777.09

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Solution

The fourth proportional to 21,208.50, 29,268.68 and 11,777.09 is: 16,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.50 : 29,268.68 = 11,777.09 : x
  2. Step 2: Convert to fraction form
    21,208.50/29,268.68 = 11,777.09/x
  3. Step 3: Cross multiply
    21,208.50x = 29,268.68 × 11,777.09
  4. Step 4: Simplify right side
    21,208.50x = 344,699,673.31
  5. Step 5: Solve for x
    x = 344,699,673.31/21,208.50
  6. Step 6: Final answer
    x = 16,252.90

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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.