Home / 10,921.44-16,379.28-4,764

Finding the Fourth Proportional to 10,921.44, 16,379.28 and 4,764

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Solution

The fourth proportional to 10,921.44, 16,379.28 and 4,764 is: 7,144.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.44 : 16,379.28 = 4,764 : x
  2. Step 2: Convert to fraction form
    10,921.44/16,379.28 = 4,764/x
  3. Step 3: Cross multiply
    10,921.44x = 16,379.28 × 4,764
  4. Step 4: Simplify right side
    10,921.44x = 78,030,889.92
  5. Step 5: Solve for x
    x = 78,030,889.92/10,921.44
  6. Step 6: Final answer
    x = 7,144.74

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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.