Home / 13,755.76-20,621.08-4,988.73

Finding the Fourth Proportional to 13,755.76, 20,621.08 and 4,988.73

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Solution

The fourth proportional to 13,755.76, 20,621.08 and 4,988.73 is: 7,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.76 : 20,621.08 = 4,988.73 : x
  2. Step 2: Convert to fraction form
    13,755.76/20,621.08 = 4,988.73/x
  3. Step 3: Cross multiply
    13,755.76x = 20,621.08 × 4,988.73
  4. Step 4: Simplify right side
    13,755.76x = 102,873,000.43
  5. Step 5: Solve for x
    x = 102,873,000.43/13,755.76
  6. Step 6: Final answer
    x = 7,478.54

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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.