Home / 20,169.81-27,830.79-11,670.48

Finding the Fourth Proportional to 20,169.81, 27,830.79 and 11,670.48

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Solution

The fourth proportional to 20,169.81, 27,830.79 and 11,670.48 is: 16,103.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.81 : 27,830.79 = 11,670.48 : x
  2. Step 2: Convert to fraction form
    20,169.81/27,830.79 = 11,670.48/x
  3. Step 3: Cross multiply
    20,169.81x = 27,830.79 × 11,670.48
  4. Step 4: Simplify right side
    20,169.81x = 324,798,678.08
  5. Step 5: Solve for x
    x = 324,798,678.08/20,169.81
  6. Step 6: Final answer
    x = 16,103.21

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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.