Home / 20,286.06-30,431.52-7,803.18

Finding the Fourth Proportional to 20,286.06, 30,431.52 and 7,803.18

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Solution

The fourth proportional to 20,286.06, 30,431.52 and 7,803.18 is: 11,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.06 : 30,431.52 = 7,803.18 : x
  2. Step 2: Convert to fraction form
    20,286.06/30,431.52 = 7,803.18/x
  3. Step 3: Cross multiply
    20,286.06x = 30,431.52 × 7,803.18
  4. Step 4: Simplify right side
    20,286.06x = 237,462,628.23
  5. Step 5: Solve for x
    x = 237,462,628.23/20,286.06
  6. Step 6: Final answer
    x = 11,705.70

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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.