Home / 20,249.42-30,375.90-5,457.98

Finding the Fourth Proportional to 20,249.42, 30,375.90 and 5,457.98

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Solution

The fourth proportional to 20,249.42, 30,375.90 and 5,457.98 is: 8,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.42 : 30,375.90 = 5,457.98 : x
  2. Step 2: Convert to fraction form
    20,249.42/30,375.90 = 5,457.98/x
  3. Step 3: Cross multiply
    20,249.42x = 30,375.90 × 5,457.98
  4. Step 4: Simplify right side
    20,249.42x = 165,791,054.68
  5. Step 5: Solve for x
    x = 165,791,054.68/20,249.42
  6. Step 6: Final answer
    x = 8,187.45

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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.