Home / 20,169.69-27,830.79-11,216.00

Finding the Fourth Proportional to 20,169.69, 27,830.79 and 11,216.00

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Solution

The fourth proportional to 20,169.69, 27,830.79 and 11,216.00 is: 15,476.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.69 : 27,830.79 = 11,216.00 : x
  2. Step 2: Convert to fraction form
    20,169.69/27,830.79 = 11,216.00/x
  3. Step 3: Cross multiply
    20,169.69x = 27,830.79 × 11,216.00
  4. Step 4: Simplify right side
    20,169.69x = 312,150,001.49
  5. Step 5: Solve for x
    x = 312,150,001.49/20,169.69
  6. Step 6: Final answer
    x = 15,476.19

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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.