Home / 13,705.90-20,546.25-4,938.67

Finding the Fourth Proportional to 13,705.90, 20,546.25 and 4,938.67

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Solution

The fourth proportional to 13,705.90, 20,546.25 and 4,938.67 is: 7,403.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.90 : 20,546.25 = 4,938.67 : x
  2. Step 2: Convert to fraction form
    13,705.90/20,546.25 = 4,938.67/x
  3. Step 3: Cross multiply
    13,705.90x = 20,546.25 × 4,938.67
  4. Step 4: Simplify right side
    13,705.90x = 101,471,148.49
  5. Step 5: Solve for x
    x = 101,471,148.49/13,705.90
  6. Step 6: Final answer
    x = 7,403.46

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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.