Home / 21,968.45-30,316.31-11,896.66

Finding the Fourth Proportional to 21,968.45, 30,316.31 and 11,896.66

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Solution

The fourth proportional to 21,968.45, 30,316.31 and 11,896.66 is: 16,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.45 : 30,316.31 = 11,896.66 : x
  2. Step 2: Convert to fraction form
    21,968.45/30,316.31 = 11,896.66/x
  3. Step 3: Cross multiply
    21,968.45x = 30,316.31 × 11,896.66
  4. Step 4: Simplify right side
    21,968.45x = 360,662,787.82
  5. Step 5: Solve for x
    x = 360,662,787.82/21,968.45
  6. Step 6: Final answer
    x = 16,417.30

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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.