Home / 20,993.06-31,489.83-8,983.60

Finding the Fourth Proportional to 20,993.06, 31,489.83 and 8,983.60

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Solution

The fourth proportional to 20,993.06, 31,489.83 and 8,983.60 is: 13,475.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.06 : 31,489.83 = 8,983.60 : x
  2. Step 2: Convert to fraction form
    20,993.06/31,489.83 = 8,983.60/x
  3. Step 3: Cross multiply
    20,993.06x = 31,489.83 × 8,983.60
  4. Step 4: Simplify right side
    20,993.06x = 282,891,958.06
  5. Step 5: Solve for x
    x = 282,891,958.06/20,993.06
  6. Step 6: Final answer
    x = 13,475.50

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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.