Home / 20,412.56-28,170.96-11,460.65

Finding the Fourth Proportional to 20,412.56, 28,170.96 and 11,460.65

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Solution

The fourth proportional to 20,412.56, 28,170.96 and 11,460.65 is: 15,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.56 : 28,170.96 = 11,460.65 : x
  2. Step 2: Convert to fraction form
    20,412.56/28,170.96 = 11,460.65/x
  3. Step 3: Cross multiply
    20,412.56x = 28,170.96 × 11,460.65
  4. Step 4: Simplify right side
    20,412.56x = 322,857,512.72
  5. Step 5: Solve for x
    x = 322,857,512.72/20,412.56
  6. Step 6: Final answer
    x = 15,816.61

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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.