Home / 20,558.60-30,788.18-11,766.86

Finding the Fourth Proportional to 20,558.60, 30,788.18 and 11,766.86

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Solution

The fourth proportional to 20,558.60, 30,788.18 and 11,766.86 is: 17,621.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.60 : 30,788.18 = 11,766.86 : x
  2. Step 2: Convert to fraction form
    20,558.60/30,788.18 = 11,766.86/x
  3. Step 3: Cross multiply
    20,558.60x = 30,788.18 × 11,766.86
  4. Step 4: Simplify right side
    20,558.60x = 362,280,203.71
  5. Step 5: Solve for x
    x = 362,280,203.71/20,558.60
  6. Step 6: Final answer
    x = 17,621.83

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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.