Home / 20,231.77-30,347.61-7,087.90

Finding the Fourth Proportional to 20,231.77, 30,347.61 and 7,087.90

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Solution

The fourth proportional to 20,231.77, 30,347.61 and 7,087.90 is: 10,631.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.77 : 30,347.61 = 7,087.90 : x
  2. Step 2: Convert to fraction form
    20,231.77/30,347.61 = 7,087.90/x
  3. Step 3: Cross multiply
    20,231.77x = 30,347.61 × 7,087.90
  4. Step 4: Simplify right side
    20,231.77x = 215,100,824.92
  5. Step 5: Solve for x
    x = 215,100,824.92/20,231.77
  6. Step 6: Final answer
    x = 10,631.83

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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.