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Finding the Fourth Proportional to 28,034, 38,686.92 and 15,458.84

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Solution

The fourth proportional to 28,034, 38,686.92 and 15,458.84 is: 21,333.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,034 : 38,686.92 = 15,458.84 : x
  2. Step 2: Convert to fraction form
    28,034/38,686.92 = 15,458.84/x
  3. Step 3: Cross multiply
    28,034x = 38,686.92 × 15,458.84
  4. Step 4: Simplify right side
    28,034x = 598,054,906.37
  5. Step 5: Solve for x
    x = 598,054,906.37/28,034
  6. Step 6: Final answer
    x = 21,333.20

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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.