Home / 20,228.42-30,342.64-6,378.50

Finding the Fourth Proportional to 20,228.42, 30,342.64 and 6,378.50

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Solution

The fourth proportional to 20,228.42, 30,342.64 and 6,378.50 is: 9,567.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.42 : 30,342.64 = 6,378.50 : x
  2. Step 2: Convert to fraction form
    20,228.42/30,342.64 = 6,378.50/x
  3. Step 3: Cross multiply
    20,228.42x = 30,342.64 × 6,378.50
  4. Step 4: Simplify right side
    20,228.42x = 193,540,529.24
  5. Step 5: Solve for x
    x = 193,540,529.24/20,228.42
  6. Step 6: Final answer
    x = 9,567.75

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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.