Home / 20,720.22-31,066.29-6,676.04

Finding the Fourth Proportional to 20,720.22, 31,066.29 and 6,676.04

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Solution

The fourth proportional to 20,720.22, 31,066.29 and 6,676.04 is: 10,009.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.22 : 31,066.29 = 6,676.04 : x
  2. Step 2: Convert to fraction form
    20,720.22/31,066.29 = 6,676.04/x
  3. Step 3: Cross multiply
    20,720.22x = 31,066.29 × 6,676.04
  4. Step 4: Simplify right side
    20,720.22x = 207,399,639.36
  5. Step 5: Solve for x
    x = 207,399,639.36/20,720.22
  6. Step 6: Final answer
    x = 10,009.53

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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.