Home / 13,953.78-20,930.67-6,161.04

Finding the Fourth Proportional to 13,953.78, 20,930.67 and 6,161.04

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Solution

The fourth proportional to 13,953.78, 20,930.67 and 6,161.04 is: 9,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.78 : 20,930.67 = 6,161.04 : x
  2. Step 2: Convert to fraction form
    13,953.78/20,930.67 = 6,161.04/x
  3. Step 3: Cross multiply
    13,953.78x = 20,930.67 × 6,161.04
  4. Step 4: Simplify right side
    13,953.78x = 128,954,695.10
  5. Step 5: Solve for x
    x = 128,954,695.10/13,953.78
  6. Step 6: Final answer
    x = 9,241.56

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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.