Home / 30,847.06-42,524.38-20,218.24

Finding the Fourth Proportional to 30,847.06, 42,524.38 and 20,218.24

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Solution

The fourth proportional to 30,847.06, 42,524.38 and 20,218.24 is: 27,871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,847.06 : 42,524.38 = 20,218.24 : x
  2. Step 2: Convert to fraction form
    30,847.06/42,524.38 = 20,218.24/x
  3. Step 3: Cross multiply
    30,847.06x = 42,524.38 × 20,218.24
  4. Step 4: Simplify right side
    30,847.06x = 859,768,120.69
  5. Step 5: Solve for x
    x = 859,768,120.69/30,847.06
  6. Step 6: Final answer
    x = 27,871.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.