Home / 38,815.85-58,236.08-13,855.35

Finding the Fourth Proportional to 38,815.85, 58,236.08 and 13,855.35

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Solution

The fourth proportional to 38,815.85, 58,236.08 and 13,855.35 is: 20,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,815.85 : 58,236.08 = 13,855.35 : x
  2. Step 2: Convert to fraction form
    38,815.85/58,236.08 = 13,855.35/x
  3. Step 3: Cross multiply
    38,815.85x = 58,236.08 × 13,855.35
  4. Step 4: Simplify right side
    38,815.85x = 806,881,201.75
  5. Step 5: Solve for x
    x = 806,881,201.75/38,815.85
  6. Step 6: Final answer
    x = 20,787.42

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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.