Home / 20,668.69-28,523.37-12,706.39

Finding the Fourth Proportional to 20,668.69, 28,523.37 and 12,706.39

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Solution

The fourth proportional to 20,668.69, 28,523.37 and 12,706.39 is: 17,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.69 : 28,523.37 = 12,706.39 : x
  2. Step 2: Convert to fraction form
    20,668.69/28,523.37 = 12,706.39/x
  3. Step 3: Cross multiply
    20,668.69x = 28,523.37 × 12,706.39
  4. Step 4: Simplify right side
    20,668.69x = 362,429,063.33
  5. Step 5: Solve for x
    x = 362,429,063.33/20,668.69
  6. Step 6: Final answer
    x = 17,535.17

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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.