Home / 28,721.36-43,064.28-11,170.64

Finding the Fourth Proportional to 28,721.36, 43,064.28 and 11,170.64

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Solution

The fourth proportional to 28,721.36, 43,064.28 and 11,170.64 is: 16,749.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.36 : 43,064.28 = 11,170.64 : x
  2. Step 2: Convert to fraction form
    28,721.36/43,064.28 = 11,170.64/x
  3. Step 3: Cross multiply
    28,721.36x = 43,064.28 × 11,170.64
  4. Step 4: Simplify right side
    28,721.36x = 481,055,568.74
  5. Step 5: Solve for x
    x = 481,055,568.74/28,721.36
  6. Step 6: Final answer
    x = 16,749.05

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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.