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Finding the Fourth Proportional to 18,155.20, 27,211.20 and 16,297.60

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Solution

The fourth proportional to 18,155.20, 27,211.20 and 16,297.60 is: 24,427.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.20 : 27,211.20 = 16,297.60 : x
  2. Step 2: Convert to fraction form
    18,155.20/27,211.20 = 16,297.60/x
  3. Step 3: Cross multiply
    18,155.20x = 27,211.20 × 16,297.60
  4. Step 4: Simplify right side
    18,155.20x = 443,477,253.12
  5. Step 5: Solve for x
    x = 443,477,253.12/18,155.20
  6. Step 6: Final answer
    x = 24,427.01

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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.