Home / 20,163.20-30,187.20-18,089.60

Finding the Fourth Proportional to 20,163.20, 30,187.20 and 18,089.60

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Solution

The fourth proportional to 20,163.20, 30,187.20 and 18,089.60 is: 27,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.20 : 30,187.20 = 18,089.60 : x
  2. Step 2: Convert to fraction form
    20,163.20/30,187.20 = 18,089.60/x
  3. Step 3: Cross multiply
    20,163.20x = 30,187.20 × 18,089.60
  4. Step 4: Simplify right side
    20,163.20x = 546,074,373.12
  5. Step 5: Solve for x
    x = 546,074,373.12/20,163.20
  6. Step 6: Final answer
    x = 27,082.72

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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.