Home / 28,720.74-43,064.91-11,170.47

Finding the Fourth Proportional to 28,720.74, 43,064.91 and 11,170.47

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Solution

The fourth proportional to 28,720.74, 43,064.91 and 11,170.47 is: 16,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.74 : 43,064.91 = 11,170.47 : x
  2. Step 2: Convert to fraction form
    28,720.74/43,064.91 = 11,170.47/x
  3. Step 3: Cross multiply
    28,720.74x = 43,064.91 × 11,170.47
  4. Step 4: Simplify right side
    28,720.74x = 481,055,285.21
  5. Step 5: Solve for x
    x = 481,055,285.21/28,720.74
  6. Step 6: Final answer
    x = 16,749.40

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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.