Home / 20,318.21-30,478.83-5,527.25

Finding the Fourth Proportional to 20,318.21, 30,478.83 and 5,527.25

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Solution

The fourth proportional to 20,318.21, 30,478.83 and 5,527.25 is: 8,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.21 : 30,478.83 = 5,527.25 : x
  2. Step 2: Convert to fraction form
    20,318.21/30,478.83 = 5,527.25/x
  3. Step 3: Cross multiply
    20,318.21x = 30,478.83 × 5,527.25
  4. Step 4: Simplify right side
    20,318.21x = 168,463,960.72
  5. Step 5: Solve for x
    x = 168,463,960.72/20,318.21
  6. Step 6: Final answer
    x = 8,291.28

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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.