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Finding the Fourth Proportional to 28,081.46, 38,754 and 15,335.83

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Solution

The fourth proportional to 28,081.46, 38,754 and 15,335.83 is: 21,164.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.46 : 38,754 = 15,335.83 : x
  2. Step 2: Convert to fraction form
    28,081.46/38,754 = 15,335.83/x
  3. Step 3: Cross multiply
    28,081.46x = 38,754 × 15,335.83
  4. Step 4: Simplify right side
    28,081.46x = 594,324,804.26
  5. Step 5: Solve for x
    x = 594,324,804.26/28,081.46
  6. Step 6: Final answer
    x = 21,164.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.