Home / 18,609.20-25,680.88-10,111.36

Finding the Fourth Proportional to 18,609.20, 25,680.88 and 10,111.36

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Solution

The fourth proportional to 18,609.20, 25,680.88 and 10,111.36 is: 13,953.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.20 : 25,680.88 = 10,111.36 : x
  2. Step 2: Convert to fraction form
    18,609.20/25,680.88 = 10,111.36/x
  3. Step 3: Cross multiply
    18,609.20x = 25,680.88 × 10,111.36
  4. Step 4: Simplify right side
    18,609.20x = 259,668,622.80
  5. Step 5: Solve for x
    x = 259,668,622.80/18,609.20
  6. Step 6: Final answer
    x = 13,953.78

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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.