Home / 20,283-27,976.45-18,609.94

Finding the Fourth Proportional to 20,283, 27,976.45 and 18,609.94

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Solution

The fourth proportional to 20,283, 27,976.45 and 18,609.94 is: 25,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283 : 27,976.45 = 18,609.94 : x
  2. Step 2: Convert to fraction form
    20,283/27,976.45 = 18,609.94/x
  3. Step 3: Cross multiply
    20,283x = 27,976.45 × 18,609.94
  4. Step 4: Simplify right side
    20,283x = 520,640,055.91
  5. Step 5: Solve for x
    x = 520,640,055.91/20,283
  6. Step 6: Final answer
    x = 25,668.79

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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.