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Finding the Fourth Proportional to 10,764, 14,849.28 and 7,621.92

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Solution

The fourth proportional to 10,764, 14,849.28 and 7,621.92 is: 10,514.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,764 : 14,849.28 = 7,621.92 : x
  2. Step 2: Convert to fraction form
    10,764/14,849.28 = 7,621.92/x
  3. Step 3: Cross multiply
    10,764x = 14,849.28 × 7,621.92
  4. Step 4: Simplify right side
    10,764x = 113,180,024.22
  5. Step 5: Solve for x
    x = 113,180,024.22/10,764
  6. Step 6: Final answer
    x = 10,514.68

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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.