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Finding the Fourth Proportional to 18,321, 27,480.22 and 9,560.84

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Solution

The fourth proportional to 18,321, 27,480.22 and 9,560.84 is: 14,340.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321 : 27,480.22 = 9,560.84 : x
  2. Step 2: Convert to fraction form
    18,321/27,480.22 = 9,560.84/x
  3. Step 3: Cross multiply
    18,321x = 27,480.22 × 9,560.84
  4. Step 4: Simplify right side
    18,321x = 262,733,986.58
  5. Step 5: Solve for x
    x = 262,733,986.58/18,321
  6. Step 6: Final answer
    x = 14,340.59

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Double scale
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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.