Home / 39,836.31-59,791.38-20,128.68

Finding the Fourth Proportional to 39,836.31, 59,791.38 and 20,128.68

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Solution

The fourth proportional to 39,836.31, 59,791.38 and 20,128.68 is: 30,211.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,836.31 : 59,791.38 = 20,128.68 : x
  2. Step 2: Convert to fraction form
    39,836.31/59,791.38 = 20,128.68/x
  3. Step 3: Cross multiply
    39,836.31x = 59,791.38 × 20,128.68
  4. Step 4: Simplify right side
    39,836.31x = 1,203,521,554.78
  5. Step 5: Solve for x
    x = 1,203,521,554.78/39,836.31
  6. Step 6: Final answer
    x = 30,211.67

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1.5x scale

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.