Home / 20,122.40-30,183.60-16,841.90

Finding the Fourth Proportional to 20,122.40, 30,183.60 and 16,841.90

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Solution

The fourth proportional to 20,122.40, 30,183.60 and 16,841.90 is: 25,262.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.40 : 30,183.60 = 16,841.90 : x
  2. Step 2: Convert to fraction form
    20,122.40/30,183.60 = 16,841.90/x
  3. Step 3: Cross multiply
    20,122.40x = 30,183.60 × 16,841.90
  4. Step 4: Simplify right side
    20,122.40x = 508,349,172.84
  5. Step 5: Solve for x
    x = 508,349,172.84/20,122.40
  6. Step 6: Final answer
    x = 25,262.85

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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.