Home / 20,544.96-30,820.32-6,690.72

Finding the Fourth Proportional to 20,544.96, 30,820.32 and 6,690.72

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Solution

The fourth proportional to 20,544.96, 30,820.32 and 6,690.72 is: 10,037.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.96 : 30,820.32 = 6,690.72 : x
  2. Step 2: Convert to fraction form
    20,544.96/30,820.32 = 6,690.72/x
  3. Step 3: Cross multiply
    20,544.96x = 30,820.32 × 6,690.72
  4. Step 4: Simplify right side
    20,544.96x = 206,210,131.43
  5. Step 5: Solve for x
    x = 206,210,131.43/20,544.96
  6. Step 6: Final answer
    x = 10,037.02

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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.