Home / 20,714.65-31,047.87-11,836.20

Finding the Fourth Proportional to 20,714.65, 31,047.87 and 11,836.20

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Solution

The fourth proportional to 20,714.65, 31,047.87 and 11,836.20 is: 17,740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.65 : 31,047.87 = 11,836.20 : x
  2. Step 2: Convert to fraction form
    20,714.65/31,047.87 = 11,836.20/x
  3. Step 3: Cross multiply
    20,714.65x = 31,047.87 × 11,836.20
  4. Step 4: Simplify right side
    20,714.65x = 367,488,584.47
  5. Step 5: Solve for x
    x = 367,488,584.47/20,714.65
  6. Step 6: Final answer
    x = 17,740.52

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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.