Home / 20,568.56-30,855.39-7,238.40

Finding the Fourth Proportional to 20,568.56, 30,855.39 and 7,238.40

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Solution

The fourth proportional to 20,568.56, 30,855.39 and 7,238.40 is: 10,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.56 : 30,855.39 = 7,238.40 : x
  2. Step 2: Convert to fraction form
    20,568.56/30,855.39 = 7,238.40/x
  3. Step 3: Cross multiply
    20,568.56x = 30,855.39 × 7,238.40
  4. Step 4: Simplify right side
    20,568.56x = 223,343,654.98
  5. Step 5: Solve for x
    x = 223,343,654.98/20,568.56
  6. Step 6: Final answer
    x = 10,858.50

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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.