Home / 20,715.77-31,072.86-6,676.53

Finding the Fourth Proportional to 20,715.77, 31,072.86 and 6,676.53

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Solution

The fourth proportional to 20,715.77, 31,072.86 and 6,676.53 is: 10,014.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.77 : 31,072.86 = 6,676.53 : x
  2. Step 2: Convert to fraction form
    20,715.77/31,072.86 = 6,676.53/x
  3. Step 3: Cross multiply
    20,715.77x = 31,072.86 × 6,676.53
  4. Step 4: Simplify right side
    20,715.77x = 207,458,881.98
  5. Step 5: Solve for x
    x = 207,458,881.98/20,715.77
  6. Step 6: Final answer
    x = 10,014.54

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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.