Home / 30,157.44-45,129.20-19,620.96

Finding the Fourth Proportional to 30,157.44, 45,129.20 and 19,620.96

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Solution

The fourth proportional to 30,157.44, 45,129.20 and 19,620.96 is: 29,361.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,157.44 : 45,129.20 = 19,620.96 : x
  2. Step 2: Convert to fraction form
    30,157.44/45,129.20 = 19,620.96/x
  3. Step 3: Cross multiply
    30,157.44x = 45,129.20 × 19,620.96
  4. Step 4: Simplify right side
    30,157.44x = 885,478,228.03
  5. Step 5: Solve for x
    x = 885,478,228.03/30,157.44
  6. Step 6: Final answer
    x = 29,361.85

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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.