Home / 20,867.65-31,301.44-13,861.33

Finding the Fourth Proportional to 20,867.65, 31,301.44 and 13,861.33

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Solution

The fourth proportional to 20,867.65, 31,301.44 and 13,861.33 is: 20,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.65 : 31,301.44 = 13,861.33 : x
  2. Step 2: Convert to fraction form
    20,867.65/31,301.44 = 13,861.33/x
  3. Step 3: Cross multiply
    20,867.65x = 31,301.44 × 13,861.33
  4. Step 4: Simplify right side
    20,867.65x = 433,879,589.32
  5. Step 5: Solve for x
    x = 433,879,589.32/20,867.65
  6. Step 6: Final answer
    x = 20,791.97

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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.