Home / 19,905.80-29,858.70-18,998.60

Finding the Fourth Proportional to 19,905.80, 29,858.70 and 18,998.60

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Solution

The fourth proportional to 19,905.80, 29,858.70 and 18,998.60 is: 28,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.80 : 29,858.70 = 18,998.60 : x
  2. Step 2: Convert to fraction form
    19,905.80/29,858.70 = 18,998.60/x
  3. Step 3: Cross multiply
    19,905.80x = 29,858.70 × 18,998.60
  4. Step 4: Simplify right side
    19,905.80x = 567,273,497.82
  5. Step 5: Solve for x
    x = 567,273,497.82/19,905.80
  6. Step 6: Final answer
    x = 28,497.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.