Home / 20,056.71-27,678.39-11,104.79

Finding the Fourth Proportional to 20,056.71, 27,678.39 and 11,104.79

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Solution

The fourth proportional to 20,056.71, 27,678.39 and 11,104.79 is: 15,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,056.71 : 27,678.39 = 11,104.79 : x
  2. Step 2: Convert to fraction form
    20,056.71/27,678.39 = 11,104.79/x
  3. Step 3: Cross multiply
    20,056.71x = 27,678.39 × 11,104.79
  4. Step 4: Simplify right side
    20,056.71x = 307,362,708.49
  5. Step 5: Solve for x
    x = 307,362,708.49/20,056.71
  6. Step 6: Final answer
    x = 15,324.68

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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.