Home / 20,967.41-31,450.09-7,818.75

Finding the Fourth Proportional to 20,967.41, 31,450.09 and 7,818.75

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Solution

The fourth proportional to 20,967.41, 31,450.09 and 7,818.75 is: 11,727.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.41 : 31,450.09 = 7,818.75 : x
  2. Step 2: Convert to fraction form
    20,967.41/31,450.09 = 7,818.75/x
  3. Step 3: Cross multiply
    20,967.41x = 31,450.09 × 7,818.75
  4. Step 4: Simplify right side
    20,967.41x = 245,900,450.27
  5. Step 5: Solve for x
    x = 245,900,450.27/20,967.41
  6. Step 6: Final answer
    x = 11,727.75

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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.