Home / 13,938.45-20,904.30-4,076.70

Finding the Fourth Proportional to 13,938.45, 20,904.30 and 4,076.70

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Solution

The fourth proportional to 13,938.45, 20,904.30 and 4,076.70 is: 6,114.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.45 : 20,904.30 = 4,076.70 : x
  2. Step 2: Convert to fraction form
    13,938.45/20,904.30 = 4,076.70/x
  3. Step 3: Cross multiply
    13,938.45x = 20,904.30 × 4,076.70
  4. Step 4: Simplify right side
    13,938.45x = 85,220,559.81
  5. Step 5: Solve for x
    x = 85,220,559.81/13,938.45
  6. Step 6: Final answer
    x = 6,114.06

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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.