Home / 20,455.76-30,683.57-5,664.57

Finding the Fourth Proportional to 20,455.76, 30,683.57 and 5,664.57

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Solution

The fourth proportional to 20,455.76, 30,683.57 and 5,664.57 is: 8,496.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.76 : 30,683.57 = 5,664.57 : x
  2. Step 2: Convert to fraction form
    20,455.76/30,683.57 = 5,664.57/x
  3. Step 3: Cross multiply
    20,455.76x = 30,683.57 × 5,664.57
  4. Step 4: Simplify right side
    20,455.76x = 173,809,201.79
  5. Step 5: Solve for x
    x = 173,809,201.79/20,455.76
  6. Step 6: Final answer
    x = 8,496.84

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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.