Home / 13,943.97-20,911.23-5,621.90

Finding the Fourth Proportional to 13,943.97, 20,911.23 and 5,621.90

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Solution

The fourth proportional to 13,943.97, 20,911.23 and 5,621.90 is: 8,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.97 : 20,911.23 = 5,621.90 : x
  2. Step 2: Convert to fraction form
    13,943.97/20,911.23 = 5,621.90/x
  3. Step 3: Cross multiply
    13,943.97x = 20,911.23 × 5,621.90
  4. Step 4: Simplify right side
    13,943.97x = 117,560,739.38
  5. Step 5: Solve for x
    x = 117,560,739.38/13,943.97
  6. Step 6: Final answer
    x = 8,430.94

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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.