Home / 20,708.98-28,578.73-11,756.74

Finding the Fourth Proportional to 20,708.98, 28,578.73 and 11,756.74

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Solution

The fourth proportional to 20,708.98, 28,578.73 and 11,756.74 is: 16,224.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.98 : 28,578.73 = 11,756.74 : x
  2. Step 2: Convert to fraction form
    20,708.98/28,578.73 = 11,756.74/x
  3. Step 3: Cross multiply
    20,708.98x = 28,578.73 × 11,756.74
  4. Step 4: Simplify right side
    20,708.98x = 335,992,698.14
  5. Step 5: Solve for x
    x = 335,992,698.14/20,708.98
  6. Step 6: Final answer
    x = 16,224.49

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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.