Home / 39,789.39-59,683.21-18,717.75

Finding the Fourth Proportional to 39,789.39, 59,683.21 and 18,717.75

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Solution

The fourth proportional to 39,789.39, 59,683.21 and 18,717.75 is: 28,076.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.39 : 59,683.21 = 18,717.75 : x
  2. Step 2: Convert to fraction form
    39,789.39/59,683.21 = 18,717.75/x
  3. Step 3: Cross multiply
    39,789.39x = 59,683.21 × 18,717.75
  4. Step 4: Simplify right side
    39,789.39x = 1,117,135,403.98
  5. Step 5: Solve for x
    x = 1,117,135,403.98/39,789.39
  6. Step 6: Final answer
    x = 28,076.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.