Home / 20,455.61-30,683.41-5,664.52

Finding the Fourth Proportional to 20,455.61, 30,683.41 and 5,664.52

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Solution

The fourth proportional to 20,455.61, 30,683.41 and 5,664.52 is: 8,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.61 : 30,683.41 = 5,664.52 : x
  2. Step 2: Convert to fraction form
    20,455.61/30,683.41 = 5,664.52/x
  3. Step 3: Cross multiply
    20,455.61x = 30,683.41 × 5,664.52
  4. Step 4: Simplify right side
    20,455.61x = 173,806,789.61
  5. Step 5: Solve for x
    x = 173,806,789.61/20,455.61
  6. Step 6: Final answer
    x = 8,496.78

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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.