Home / 20,106.56-30,120.60-13,160

Finding the Fourth Proportional to 20,106.56, 30,120.60 and 13,160

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Solution

The fourth proportional to 20,106.56, 30,120.60 and 13,160 is: 19,714.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.56 : 30,120.60 = 13,160 : x
  2. Step 2: Convert to fraction form
    20,106.56/30,120.60 = 13,160/x
  3. Step 3: Cross multiply
    20,106.56x = 30,120.60 × 13,160
  4. Step 4: Simplify right side
    20,106.56x = 396,387,096
  5. Step 5: Solve for x
    x = 396,387,096/20,106.56
  6. Step 6: Final answer
    x = 19,714.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.