Home / 10,965.20-16,443.48-3,943.28

Finding the Fourth Proportional to 10,965.20, 16,443.48 and 3,943.28

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Solution

The fourth proportional to 10,965.20, 16,443.48 and 3,943.28 is: 5,913.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.20 : 16,443.48 = 3,943.28 : x
  2. Step 2: Convert to fraction form
    10,965.20/16,443.48 = 3,943.28/x
  3. Step 3: Cross multiply
    10,965.20x = 16,443.48 × 3,943.28
  4. Step 4: Simplify right side
    10,965.20x = 64,841,245.81
  5. Step 5: Solve for x
    x = 64,841,245.81/10,965.20
  6. Step 6: Final answer
    x = 5,913.37

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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.