Home / 20,736.69-28,616.64-11,784.20

Finding the Fourth Proportional to 20,736.69, 28,616.64 and 11,784.20

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Solution

The fourth proportional to 20,736.69, 28,616.64 and 11,784.20 is: 16,262.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.69 : 28,616.64 = 11,784.20 : x
  2. Step 2: Convert to fraction form
    20,736.69/28,616.64 = 11,784.20/x
  3. Step 3: Cross multiply
    20,736.69x = 28,616.64 × 11,784.20
  4. Step 4: Simplify right side
    20,736.69x = 337,224,209.09
  5. Step 5: Solve for x
    x = 337,224,209.09/20,736.69
  6. Step 6: Final answer
    x = 16,262.20

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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.