Home / 21,326.30-29,431.96-11,768.09

Finding the Fourth Proportional to 21,326.30, 29,431.96 and 11,768.09

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Solution

The fourth proportional to 21,326.30, 29,431.96 and 11,768.09 is: 16,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.30 : 29,431.96 = 11,768.09 : x
  2. Step 2: Convert to fraction form
    21,326.30/29,431.96 = 11,768.09/x
  3. Step 3: Cross multiply
    21,326.30x = 29,431.96 × 11,768.09
  4. Step 4: Simplify right side
    21,326.30x = 346,357,954.16
  5. Step 5: Solve for x
    x = 346,357,954.16/21,326.30
  6. Step 6: Final answer
    x = 16,240.88

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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.