Home / 10,620.87-15,930.27-3,225.39

Finding the Fourth Proportional to 10,620.87, 15,930.27 and 3,225.39

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Solution

The fourth proportional to 10,620.87, 15,930.27 and 3,225.39 is: 4,837.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.87 : 15,930.27 = 3,225.39 : x
  2. Step 2: Convert to fraction form
    10,620.87/15,930.27 = 3,225.39/x
  3. Step 3: Cross multiply
    10,620.87x = 15,930.27 × 3,225.39
  4. Step 4: Simplify right side
    10,620.87x = 51,381,273.82
  5. Step 5: Solve for x
    x = 51,381,273.82/10,620.87
  6. Step 6: Final answer
    x = 4,837.77

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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.