Home / 20,755.76-31,137.64-6,719.27

Finding the Fourth Proportional to 20,755.76, 31,137.64 and 6,719.27

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Solution

The fourth proportional to 20,755.76, 31,137.64 and 6,719.27 is: 10,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.76 : 31,137.64 = 6,719.27 : x
  2. Step 2: Convert to fraction form
    20,755.76/31,137.64 = 6,719.27/x
  3. Step 3: Cross multiply
    20,755.76x = 31,137.64 × 6,719.27
  4. Step 4: Simplify right side
    20,755.76x = 209,222,210.32
  5. Step 5: Solve for x
    x = 209,222,210.32/20,755.76
  6. Step 6: Final answer
    x = 10,080.20

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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.