Home / 19,788.84-27,308.54-11,174.09

Finding the Fourth Proportional to 19,788.84, 27,308.54 and 11,174.09

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Solution

The fourth proportional to 19,788.84, 27,308.54 and 11,174.09 is: 15,420.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.84 : 27,308.54 = 11,174.09 : x
  2. Step 2: Convert to fraction form
    19,788.84/27,308.54 = 11,174.09/x
  3. Step 3: Cross multiply
    19,788.84x = 27,308.54 × 11,174.09
  4. Step 4: Simplify right side
    19,788.84x = 305,147,975.12
  5. Step 5: Solve for x
    x = 305,147,975.12/19,788.84
  6. Step 6: Final answer
    x = 15,420.21

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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.