Home / 20,455.33-30,683.38-6,415.05

Finding the Fourth Proportional to 20,455.33, 30,683.38 and 6,415.05

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Solution

The fourth proportional to 20,455.33, 30,683.38 and 6,415.05 is: 9,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.33 : 30,683.38 = 6,415.05 : x
  2. Step 2: Convert to fraction form
    20,455.33/30,683.38 = 6,415.05/x
  3. Step 3: Cross multiply
    20,455.33x = 30,683.38 × 6,415.05
  4. Step 4: Simplify right side
    20,455.33x = 196,835,416.87
  5. Step 5: Solve for x
    x = 196,835,416.87/20,455.33
  6. Step 6: Final answer
    x = 9,622.70

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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.