Home / 21,427.96-29,570.58-11,996.56

Finding the Fourth Proportional to 21,427.96, 29,570.58 and 11,996.56

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Solution

The fourth proportional to 21,427.96, 29,570.58 and 11,996.56 is: 16,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.96 : 29,570.58 = 11,996.56 : x
  2. Step 2: Convert to fraction form
    21,427.96/29,570.58 = 11,996.56/x
  3. Step 3: Cross multiply
    21,427.96x = 29,570.58 × 11,996.56
  4. Step 4: Simplify right side
    21,427.96x = 354,745,237.20
  5. Step 5: Solve for x
    x = 354,745,237.20/21,427.96
  6. Step 6: Final answer
    x = 16,555.25

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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.