Home / 38,961.95-58,405.94-12,648.29

Finding the Fourth Proportional to 38,961.95, 58,405.94 and 12,648.29

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Solution

The fourth proportional to 38,961.95, 58,405.94 and 12,648.29 is: 18,960.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,961.95 : 58,405.94 = 12,648.29 : x
  2. Step 2: Convert to fraction form
    38,961.95/58,405.94 = 12,648.29/x
  3. Step 3: Cross multiply
    38,961.95x = 58,405.94 × 12,648.29
  4. Step 4: Simplify right side
    38,961.95x = 738,735,203.60
  5. Step 5: Solve for x
    x = 738,735,203.60/38,961.95
  6. Step 6: Final answer
    x = 18,960.43

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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.