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Finding the Fourth Proportional to 13,460.60, 20,191.80 and 4,575.80

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Solution

The fourth proportional to 13,460.60, 20,191.80 and 4,575.80 is: 6,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,460.60 : 20,191.80 = 4,575.80 : x
  2. Step 2: Convert to fraction form
    13,460.60/20,191.80 = 4,575.80/x
  3. Step 3: Cross multiply
    13,460.60x = 20,191.80 × 4,575.80
  4. Step 4: Simplify right side
    13,460.60x = 92,393,638.44
  5. Step 5: Solve for x
    x = 92,393,638.44/13,460.60
  6. Step 6: Final answer
    x = 6,864.01

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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.