Home / 20,900.67-28,841.94-11,469.03

Finding the Fourth Proportional to 20,900.67, 28,841.94 and 11,469.03

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Solution

The fourth proportional to 20,900.67, 28,841.94 and 11,469.03 is: 15,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.67 : 28,841.94 = 11,469.03 : x
  2. Step 2: Convert to fraction form
    20,900.67/28,841.94 = 11,469.03/x
  3. Step 3: Cross multiply
    20,900.67x = 28,841.94 × 11,469.03
  4. Step 4: Simplify right side
    20,900.67x = 330,789,075.12
  5. Step 5: Solve for x
    x = 330,789,075.12/20,900.67
  6. Step 6: Final answer
    x = 15,826.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.