Home / 13,855.60-20,785.28-4,492.57

Finding the Fourth Proportional to 13,855.60, 20,785.28 and 4,492.57

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Solution

The fourth proportional to 13,855.60, 20,785.28 and 4,492.57 is: 6,739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.60 : 20,785.28 = 4,492.57 : x
  2. Step 2: Convert to fraction form
    13,855.60/20,785.28 = 4,492.57/x
  3. Step 3: Cross multiply
    13,855.60x = 20,785.28 × 4,492.57
  4. Step 4: Simplify right side
    13,855.60x = 93,379,221.44
  5. Step 5: Solve for x
    x = 93,379,221.44/13,855.60
  6. Step 6: Final answer
    x = 6,739.46

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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.