Home / 20,684.56-28,544.76-11,253.12

Finding the Fourth Proportional to 20,684.56, 28,544.76 and 11,253.12

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Solution

The fourth proportional to 20,684.56, 28,544.76 and 11,253.12 is: 15,529.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.56 : 28,544.76 = 11,253.12 : x
  2. Step 2: Convert to fraction form
    20,684.56/28,544.76 = 11,253.12/x
  3. Step 3: Cross multiply
    20,684.56x = 28,544.76 × 11,253.12
  4. Step 4: Simplify right side
    20,684.56x = 321,217,609.65
  5. Step 5: Solve for x
    x = 321,217,609.65/20,684.56
  6. Step 6: Final answer
    x = 15,529.34

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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.