Home / 19,728.48-27,225.20-11,771.04

Finding the Fourth Proportional to 19,728.48, 27,225.20 and 11,771.04

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Solution

The fourth proportional to 19,728.48, 27,225.20 and 11,771.04 is: 16,243.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.48 : 27,225.20 = 11,771.04 : x
  2. Step 2: Convert to fraction form
    19,728.48/27,225.20 = 11,771.04/x
  3. Step 3: Cross multiply
    19,728.48x = 27,225.20 × 11,771.04
  4. Step 4: Simplify right side
    19,728.48x = 320,468,918.21
  5. Step 5: Solve for x
    x = 320,468,918.21/19,728.48
  6. Step 6: Final answer
    x = 16,243.97

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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.