Home / 20,015.30-30,023.87-6,689.49

Finding the Fourth Proportional to 20,015.30, 30,023.87 and 6,689.49

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Solution

The fourth proportional to 20,015.30, 30,023.87 and 6,689.49 is: 10,034.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.30 : 30,023.87 = 6,689.49 : x
  2. Step 2: Convert to fraction form
    20,015.30/30,023.87 = 6,689.49/x
  3. Step 3: Cross multiply
    20,015.30x = 30,023.87 × 6,689.49
  4. Step 4: Simplify right side
    20,015.30x = 200,844,232.09
  5. Step 5: Solve for x
    x = 200,844,232.09/20,015.30
  6. Step 6: Final answer
    x = 10,034.53

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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.