Home / 20,505.68-30,758.82-6,465.44

Finding the Fourth Proportional to 20,505.68, 30,758.82 and 6,465.44

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Solution

The fourth proportional to 20,505.68, 30,758.82 and 6,465.44 is: 9,698.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.68 : 30,758.82 = 6,465.44 : x
  2. Step 2: Convert to fraction form
    20,505.68/30,758.82 = 6,465.44/x
  3. Step 3: Cross multiply
    20,505.68x = 30,758.82 × 6,465.44
  4. Step 4: Simplify right side
    20,505.68x = 198,869,305.18
  5. Step 5: Solve for x
    x = 198,869,305.18/20,505.68
  6. Step 6: Final answer
    x = 9,698.25

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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.