Home / 13,938.73-20,906.53-4,078.08

Finding the Fourth Proportional to 13,938.73, 20,906.53 and 4,078.08

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Solution

The fourth proportional to 13,938.73, 20,906.53 and 4,078.08 is: 6,116.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.73 : 20,906.53 = 4,078.08 : x
  2. Step 2: Convert to fraction form
    13,938.73/20,906.53 = 4,078.08/x
  3. Step 3: Cross multiply
    13,938.73x = 20,906.53 × 4,078.08
  4. Step 4: Simplify right side
    13,938.73x = 85,258,491.67
  5. Step 5: Solve for x
    x = 85,258,491.67/13,938.73
  6. Step 6: Final answer
    x = 6,116.66

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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.