Home / 20,975.67-31,459.59-6,935.85

Finding the Fourth Proportional to 20,975.67, 31,459.59 and 6,935.85

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Solution

The fourth proportional to 20,975.67, 31,459.59 and 6,935.85 is: 10,402.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.67 : 31,459.59 = 6,935.85 : x
  2. Step 2: Convert to fraction form
    20,975.67/31,459.59 = 6,935.85/x
  3. Step 3: Cross multiply
    20,975.67x = 31,459.59 × 6,935.85
  4. Step 4: Simplify right side
    20,975.67x = 218,198,997.30
  5. Step 5: Solve for x
    x = 218,198,997.30/20,975.67
  6. Step 6: Final answer
    x = 10,402.48

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1.5x scale

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.