Home / 20,861.16-31,293.66-6,821.26

Finding the Fourth Proportional to 20,861.16, 31,293.66 and 6,821.26

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Solution

The fourth proportional to 20,861.16, 31,293.66 and 6,821.26 is: 10,232.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.16 : 31,293.66 = 6,821.26 : x
  2. Step 2: Convert to fraction form
    20,861.16/31,293.66 = 6,821.26/x
  3. Step 3: Cross multiply
    20,861.16x = 31,293.66 × 6,821.26
  4. Step 4: Simplify right side
    20,861.16x = 213,462,191.21
  5. Step 5: Solve for x
    x = 213,462,191.21/20,861.16
  6. Step 6: Final answer
    x = 10,232.52

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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.