Home / 19,866.98-27,415.32-11,905.22

Finding the Fourth Proportional to 19,866.98, 27,415.32 and 11,905.22

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Solution

The fourth proportional to 19,866.98, 27,415.32 and 11,905.22 is: 16,428.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.98 : 27,415.32 = 11,905.22 : x
  2. Step 2: Convert to fraction form
    19,866.98/27,415.32 = 11,905.22/x
  3. Step 3: Cross multiply
    19,866.98x = 27,415.32 × 11,905.22
  4. Step 4: Simplify right side
    19,866.98x = 326,385,415.97
  5. Step 5: Solve for x
    x = 326,385,415.97/19,866.98
  6. Step 6: Final answer
    x = 16,428.54

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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.