Home / 18,220.90-27,269.57-11,205.32

Finding the Fourth Proportional to 18,220.90, 27,269.57 and 11,205.32

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Solution

The fourth proportional to 18,220.90, 27,269.57 and 11,205.32 is: 16,769.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.90 : 27,269.57 = 11,205.32 : x
  2. Step 2: Convert to fraction form
    18,220.90/27,269.57 = 11,205.32/x
  3. Step 3: Cross multiply
    18,220.90x = 27,269.57 × 11,205.32
  4. Step 4: Simplify right side
    18,220.90x = 305,564,258.11
  5. Step 5: Solve for x
    x = 305,564,258.11/18,220.90
  6. Step 6: Final answer
    x = 16,769.99

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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.