Home / 20,009.76-30,040.56-12,629.04

Finding the Fourth Proportional to 20,009.76, 30,040.56 and 12,629.04

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Solution

The fourth proportional to 20,009.76, 30,040.56 and 12,629.04 is: 18,959.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.76 : 30,040.56 = 12,629.04 : x
  2. Step 2: Convert to fraction form
    20,009.76/30,040.56 = 12,629.04/x
  3. Step 3: Cross multiply
    20,009.76x = 30,040.56 × 12,629.04
  4. Step 4: Simplify right side
    20,009.76x = 379,383,433.86
  5. Step 5: Solve for x
    x = 379,383,433.86/20,009.76
  6. Step 6: Final answer
    x = 18,959.92

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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.