Home / 21,427.52-29,570.61-11,996.09

Finding the Fourth Proportional to 21,427.52, 29,570.61 and 11,996.09

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Solution

The fourth proportional to 21,427.52, 29,570.61 and 11,996.09 is: 16,554.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.52 : 29,570.61 = 11,996.09 : x
  2. Step 2: Convert to fraction form
    21,427.52/29,570.61 = 11,996.09/x
  3. Step 3: Cross multiply
    21,427.52x = 29,570.61 × 11,996.09
  4. Step 4: Simplify right side
    21,427.52x = 354,731,551.06
  5. Step 5: Solve for x
    x = 354,731,551.06/21,427.52
  6. Step 6: Final answer
    x = 16,554.96

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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.