Home / 20,715.67-31,077.75-6,677.56

Finding the Fourth Proportional to 20,715.67, 31,077.75 and 6,677.56

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Solution

The fourth proportional to 20,715.67, 31,077.75 and 6,677.56 is: 10,017.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.67 : 31,077.75 = 6,677.56 : x
  2. Step 2: Convert to fraction form
    20,715.67/31,077.75 = 6,677.56/x
  3. Step 3: Cross multiply
    20,715.67x = 31,077.75 × 6,677.56
  4. Step 4: Simplify right side
    20,715.67x = 207,523,487.64
  5. Step 5: Solve for x
    x = 207,523,487.64/20,715.67
  6. Step 6: Final answer
    x = 10,017.71

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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.