Home / 39,638.90-54,701.27-21,733.86

Finding the Fourth Proportional to 39,638.90, 54,701.27 and 21,733.86

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Solution

The fourth proportional to 39,638.90, 54,701.27 and 21,733.86 is: 29,992.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,638.90 : 54,701.27 = 21,733.86 : x
  2. Step 2: Convert to fraction form
    39,638.90/54,701.27 = 21,733.86/x
  3. Step 3: Cross multiply
    39,638.90x = 54,701.27 × 21,733.86
  4. Step 4: Simplify right side
    39,638.90x = 1,188,869,921.96
  5. Step 5: Solve for x
    x = 1,188,869,921.96/39,638.90
  6. Step 6: Final answer
    x = 29,992.50

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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.