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Finding the Fourth Proportional to 27,321.60, 40,975.20 and 8,601.60

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Solution

The fourth proportional to 27,321.60, 40,975.20 and 8,601.60 is: 12,900.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,321.60 : 40,975.20 = 8,601.60 : x
  2. Step 2: Convert to fraction form
    27,321.60/40,975.20 = 8,601.60/x
  3. Step 3: Cross multiply
    27,321.60x = 40,975.20 × 8,601.60
  4. Step 4: Simplify right side
    27,321.60x = 352,452,280.32
  5. Step 5: Solve for x
    x = 352,452,280.32/27,321.60
  6. Step 6: Final answer
    x = 12,900.13

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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.