Home / 11,215.16-16,821.52-4,975.28

Finding the Fourth Proportional to 11,215.16, 16,821.52 and 4,975.28

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Solution

The fourth proportional to 11,215.16, 16,821.52 and 4,975.28 is: 7,462.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.16 : 16,821.52 = 4,975.28 : x
  2. Step 2: Convert to fraction form
    11,215.16/16,821.52 = 4,975.28/x
  3. Step 3: Cross multiply
    11,215.16x = 16,821.52 × 4,975.28
  4. Step 4: Simplify right side
    11,215.16x = 83,691,772.03
  5. Step 5: Solve for x
    x = 83,691,772.03/11,215.16
  6. Step 6: Final answer
    x = 7,462.38

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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.