Home / 20,142.18-30,182.22-10,783.44

Finding the Fourth Proportional to 20,142.18, 30,182.22 and 10,783.44

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Solution

The fourth proportional to 20,142.18, 30,182.22 and 10,783.44 is: 16,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.18 : 30,182.22 = 10,783.44 : x
  2. Step 2: Convert to fraction form
    20,142.18/30,182.22 = 10,783.44/x
  3. Step 3: Cross multiply
    20,142.18x = 30,182.22 × 10,783.44
  4. Step 4: Simplify right side
    20,142.18x = 325,468,158.44
  5. Step 5: Solve for x
    x = 325,468,158.44/20,142.18
  6. Step 6: Final answer
    x = 16,158.54

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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.