Home / 13,938.26-20,910.83-6,921.57

Finding the Fourth Proportional to 13,938.26, 20,910.83 and 6,921.57

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Solution

The fourth proportional to 13,938.26, 20,910.83 and 6,921.57 is: 10,384.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.26 : 20,910.83 = 6,921.57 : x
  2. Step 2: Convert to fraction form
    13,938.26/20,910.83 = 6,921.57/x
  3. Step 3: Cross multiply
    13,938.26x = 20,910.83 × 6,921.57
  4. Step 4: Simplify right side
    13,938.26x = 144,735,773.60
  5. Step 5: Solve for x
    x = 144,735,773.60/13,938.26
  6. Step 6: Final answer
    x = 10,384.06

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1.5x scale

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.