Home / 21,558.83-29,749.20-19,971.94

Finding the Fourth Proportional to 21,558.83, 29,749.20 and 19,971.94

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Solution

The fourth proportional to 21,558.83, 29,749.20 and 19,971.94 is: 27,559.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.83 : 29,749.20 = 19,971.94 : x
  2. Step 2: Convert to fraction form
    21,558.83/29,749.20 = 19,971.94/x
  3. Step 3: Cross multiply
    21,558.83x = 29,749.20 × 19,971.94
  4. Step 4: Simplify right side
    21,558.83x = 594,149,237.45
  5. Step 5: Solve for x
    x = 594,149,237.45/21,558.83
  6. Step 6: Final answer
    x = 27,559.44

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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.