Home / 30,268.76-45,440.94-20,451.56

Finding the Fourth Proportional to 30,268.76, 45,440.94 and 20,451.56

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Solution

The fourth proportional to 30,268.76, 45,440.94 and 20,451.56 is: 30,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,268.76 : 45,440.94 = 20,451.56 : x
  2. Step 2: Convert to fraction form
    30,268.76/45,440.94 = 20,451.56/x
  3. Step 3: Cross multiply
    30,268.76x = 45,440.94 × 20,451.56
  4. Step 4: Simplify right side
    30,268.76x = 929,338,110.87
  5. Step 5: Solve for x
    x = 929,338,110.87/30,268.76
  6. Step 6: Final answer
    x = 30,702.88

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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.