Home / 20,020.80-27,626.91-11,520.66

Finding the Fourth Proportional to 20,020.80, 27,626.91 and 11,520.66

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Solution

The fourth proportional to 20,020.80, 27,626.91 and 11,520.66 is: 15,897.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.80 : 27,626.91 = 11,520.66 : x
  2. Step 2: Convert to fraction form
    20,020.80/27,626.91 = 11,520.66/x
  3. Step 3: Cross multiply
    20,020.80x = 27,626.91 × 11,520.66
  4. Step 4: Simplify right side
    20,020.80x = 318,280,297.36
  5. Step 5: Solve for x
    x = 318,280,297.36/20,020.80
  6. Step 6: Final answer
    x = 15,897.48

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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.