Home / 20,926.89-31,394.94-6,891.24

Finding the Fourth Proportional to 20,926.89, 31,394.94 and 6,891.24

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Solution

The fourth proportional to 20,926.89, 31,394.94 and 6,891.24 is: 10,338.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.89 : 31,394.94 = 6,891.24 : x
  2. Step 2: Convert to fraction form
    20,926.89/31,394.94 = 6,891.24/x
  3. Step 3: Cross multiply
    20,926.89x = 31,394.94 × 6,891.24
  4. Step 4: Simplify right side
    20,926.89x = 216,350,066.33
  5. Step 5: Solve for x
    x = 216,350,066.33/20,926.89
  6. Step 6: Final answer
    x = 10,338.38

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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.