Home / 27,520.40-41,280.60-21,299.60

Finding the Fourth Proportional to 27,520.40, 41,280.60 and 21,299.60

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Solution

The fourth proportional to 27,520.40, 41,280.60 and 21,299.60 is: 31,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,520.40 : 41,280.60 = 21,299.60 : x
  2. Step 2: Convert to fraction form
    27,520.40/41,280.60 = 21,299.60/x
  3. Step 3: Cross multiply
    27,520.40x = 41,280.60 × 21,299.60
  4. Step 4: Simplify right side
    27,520.40x = 879,260,267.76
  5. Step 5: Solve for x
    x = 879,260,267.76/27,520.40
  6. Step 6: Final answer
    x = 31,949.40

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Half scale
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Double scale
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Similar ratio
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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.