Home / 13,656.85-20,492.30-11,819.77

Finding the Fourth Proportional to 13,656.85, 20,492.30 and 11,819.77

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Solution

The fourth proportional to 13,656.85, 20,492.30 and 11,819.77 is: 17,735.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.85 : 20,492.30 = 11,819.77 : x
  2. Step 2: Convert to fraction form
    13,656.85/20,492.30 = 11,819.77/x
  3. Step 3: Cross multiply
    13,656.85x = 20,492.30 × 11,819.77
  4. Step 4: Simplify right side
    13,656.85x = 242,214,213.67
  5. Step 5: Solve for x
    x = 242,214,213.67/13,656.85
  6. Step 6: Final answer
    x = 17,735.73

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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.