Home / 19,858.51-29,783.23-11,855.54

Finding the Fourth Proportional to 19,858.51, 29,783.23 and 11,855.54

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Solution

The fourth proportional to 19,858.51, 29,783.23 and 11,855.54 is: 17,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.51 : 29,783.23 = 11,855.54 : x
  2. Step 2: Convert to fraction form
    19,858.51/29,783.23 = 11,855.54/x
  3. Step 3: Cross multiply
    19,858.51x = 29,783.23 × 11,855.54
  4. Step 4: Simplify right side
    19,858.51x = 353,096,319.41
  5. Step 5: Solve for x
    x = 353,096,319.41/19,858.51
  6. Step 6: Final answer
    x = 17,780.60

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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.