Home / 20,741.43-31,119.57-8,890.23

Finding the Fourth Proportional to 20,741.43, 31,119.57 and 8,890.23

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Solution

The fourth proportional to 20,741.43, 31,119.57 and 8,890.23 is: 13,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.43 : 31,119.57 = 8,890.23 : x
  2. Step 2: Convert to fraction form
    20,741.43/31,119.57 = 8,890.23/x
  3. Step 3: Cross multiply
    20,741.43x = 31,119.57 × 8,890.23
  4. Step 4: Simplify right side
    20,741.43x = 276,660,134.80
  5. Step 5: Solve for x
    x = 276,660,134.80/20,741.43
  6. Step 6: Final answer
    x = 13,338.53

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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.