Home / 19,788.85-27,311.70-11,290.96

Finding the Fourth Proportional to 19,788.85, 27,311.70 and 11,290.96

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Solution

The fourth proportional to 19,788.85, 27,311.70 and 11,290.96 is: 15,583.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.85 : 27,311.70 = 11,290.96 : x
  2. Step 2: Convert to fraction form
    19,788.85/27,311.70 = 11,290.96/x
  3. Step 3: Cross multiply
    19,788.85x = 27,311.70 × 11,290.96
  4. Step 4: Simplify right side
    19,788.85x = 308,375,312.23
  5. Step 5: Solve for x
    x = 308,375,312.23/19,788.85
  6. Step 6: Final answer
    x = 15,583.29

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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.