Home / 20,119.86-30,180.43-9,591.03

Finding the Fourth Proportional to 20,119.86, 30,180.43 and 9,591.03

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Solution

The fourth proportional to 20,119.86, 30,180.43 and 9,591.03 is: 14,386.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.86 : 30,180.43 = 9,591.03 : x
  2. Step 2: Convert to fraction form
    20,119.86/30,180.43 = 9,591.03/x
  3. Step 3: Cross multiply
    20,119.86x = 30,180.43 × 9,591.03
  4. Step 4: Simplify right side
    20,119.86x = 289,461,409.54
  5. Step 5: Solve for x
    x = 289,461,409.54/20,119.86
  6. Step 6: Final answer
    x = 14,386.85

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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.