Home / 20,673.90-31,010.94-5,091.54

Finding the Fourth Proportional to 20,673.90, 31,010.94 and 5,091.54

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Solution

The fourth proportional to 20,673.90, 31,010.94 and 5,091.54 is: 7,637.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.90 : 31,010.94 = 5,091.54 : x
  2. Step 2: Convert to fraction form
    20,673.90/31,010.94 = 5,091.54/x
  3. Step 3: Cross multiply
    20,673.90x = 31,010.94 × 5,091.54
  4. Step 4: Simplify right side
    20,673.90x = 157,893,441.45
  5. Step 5: Solve for x
    x = 157,893,441.45/20,673.90
  6. Step 6: Final answer
    x = 7,637.33

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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.