Home / 20,009.61-30,016.15-5,218.54

Finding the Fourth Proportional to 20,009.61, 30,016.15 and 5,218.54

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Solution

The fourth proportional to 20,009.61, 30,016.15 and 5,218.54 is: 7,828.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.61 : 30,016.15 = 5,218.54 : x
  2. Step 2: Convert to fraction form
    20,009.61/30,016.15 = 5,218.54/x
  3. Step 3: Cross multiply
    20,009.61x = 30,016.15 × 5,218.54
  4. Step 4: Simplify right side
    20,009.61x = 156,640,391.33
  5. Step 5: Solve for x
    x = 156,640,391.33/20,009.61
  6. Step 6: Final answer
    x = 7,828.26

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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.