Home / 20,141.42-30,163.52-12,113.10

Finding the Fourth Proportional to 20,141.42, 30,163.52 and 12,113.10

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Solution

The fourth proportional to 20,141.42, 30,163.52 and 12,113.10 is: 18,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.42 : 30,163.52 = 12,113.10 : x
  2. Step 2: Convert to fraction form
    20,141.42/30,163.52 = 12,113.10/x
  3. Step 3: Cross multiply
    20,141.42x = 30,163.52 × 12,113.10
  4. Step 4: Simplify right side
    20,141.42x = 365,373,734.11
  5. Step 5: Solve for x
    x = 365,373,734.11/20,141.42
  6. Step 6: Final answer
    x = 18,140.42

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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.