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Finding the Fourth Proportional to 28,693.56, 43,055.08 and 11,839.02

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Solution

The fourth proportional to 28,693.56, 43,055.08 and 11,839.02 is: 17,764.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,693.56 : 43,055.08 = 11,839.02 : x
  2. Step 2: Convert to fraction form
    28,693.56/43,055.08 = 11,839.02/x
  3. Step 3: Cross multiply
    28,693.56x = 43,055.08 × 11,839.02
  4. Step 4: Simplify right side
    28,693.56x = 509,729,953.22
  5. Step 5: Solve for x
    x = 509,729,953.22/28,693.56
  6. Step 6: Final answer
    x = 17,764.61

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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.