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Finding the Fourth Proportional to 13,495.60, 20,234.60 and 12,113.20

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Solution

The fourth proportional to 13,495.60, 20,234.60 and 12,113.20 is: 18,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,495.60 : 20,234.60 = 12,113.20 : x
  2. Step 2: Convert to fraction form
    13,495.60/20,234.60 = 12,113.20/x
  3. Step 3: Cross multiply
    13,495.60x = 20,234.60 × 12,113.20
  4. Step 4: Simplify right side
    13,495.60x = 245,105,756.72
  5. Step 5: Solve for x
    x = 245,105,756.72/13,495.60
  6. Step 6: Final answer
    x = 18,161.90

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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.