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Finding the Fourth Proportional to 14,869.63, 20,520.08 and 8,245.63

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Solution

The fourth proportional to 14,869.63, 20,520.08 and 8,245.63 is: 11,378.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869.63 : 20,520.08 = 8,245.63 : x
  2. Step 2: Convert to fraction form
    14,869.63/20,520.08 = 8,245.63/x
  3. Step 3: Cross multiply
    14,869.63x = 20,520.08 × 8,245.63
  4. Step 4: Simplify right side
    14,869.63x = 169,200,987.25
  5. Step 5: Solve for x
    x = 169,200,987.25/14,869.63
  6. Step 6: Final answer
    x = 11,378.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.