Home / 20,631.66-30,949.54-7,485.06

Finding the Fourth Proportional to 20,631.66, 30,949.54 and 7,485.06

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Solution

The fourth proportional to 20,631.66, 30,949.54 and 7,485.06 is: 11,228.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.66 : 30,949.54 = 7,485.06 : x
  2. Step 2: Convert to fraction form
    20,631.66/30,949.54 = 7,485.06/x
  3. Step 3: Cross multiply
    20,631.66x = 30,949.54 × 7,485.06
  4. Step 4: Simplify right side
    20,631.66x = 231,659,129.23
  5. Step 5: Solve for x
    x = 231,659,129.23/20,631.66
  6. Step 6: Final answer
    x = 11,228.33

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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.