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Finding the Fourth Proportional to 12,028.68, 18,043.02 and 7,894.86

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Solution

The fourth proportional to 12,028.68, 18,043.02 and 7,894.86 is: 11,842.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.68 : 18,043.02 = 7,894.86 : x
  2. Step 2: Convert to fraction form
    12,028.68/18,043.02 = 7,894.86/x
  3. Step 3: Cross multiply
    12,028.68x = 18,043.02 × 7,894.86
  4. Step 4: Simplify right side
    12,028.68x = 142,447,116.88
  5. Step 5: Solve for x
    x = 142,447,116.88/12,028.68
  6. Step 6: Final answer
    x = 11,842.29

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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.