Home / 39,695.18-54,779.99-21,791.84

Finding the Fourth Proportional to 39,695.18, 54,779.99 and 21,791.84

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Solution

The fourth proportional to 39,695.18, 54,779.99 and 21,791.84 is: 30,073.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,695.18 : 54,779.99 = 21,791.84 : x
  2. Step 2: Convert to fraction form
    39,695.18/54,779.99 = 21,791.84/x
  3. Step 3: Cross multiply
    39,695.18x = 54,779.99 × 21,791.84
  4. Step 4: Simplify right side
    39,695.18x = 1,193,756,394.42
  5. Step 5: Solve for x
    x = 1,193,756,394.42/39,695.18
  6. Step 6: Final answer
    x = 30,073.09

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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.