Home / 13,704.06-20,536.41-7,785.66

Finding the Fourth Proportional to 13,704.06, 20,536.41 and 7,785.66

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Solution

The fourth proportional to 13,704.06, 20,536.41 and 7,785.66 is: 11,667.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.06 : 20,536.41 = 7,785.66 : x
  2. Step 2: Convert to fraction form
    13,704.06/20,536.41 = 7,785.66/x
  3. Step 3: Cross multiply
    13,704.06x = 20,536.41 × 7,785.66
  4. Step 4: Simplify right side
    13,704.06x = 159,889,505.88
  5. Step 5: Solve for x
    x = 159,889,505.88/13,704.06
  6. Step 6: Final answer
    x = 11,667.31

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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.