Home / 18,278.20-27,428.10-12,056.20

Finding the Fourth Proportional to 18,278.20, 27,428.10 and 12,056.20

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Solution

The fourth proportional to 18,278.20, 27,428.10 and 12,056.20 is: 18,091.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.20 : 27,428.10 = 12,056.20 : x
  2. Step 2: Convert to fraction form
    18,278.20/27,428.10 = 12,056.20/x
  3. Step 3: Cross multiply
    18,278.20x = 27,428.10 × 12,056.20
  4. Step 4: Simplify right side
    18,278.20x = 330,678,659.22
  5. Step 5: Solve for x
    x = 330,678,659.22/18,278.20
  6. Step 6: Final answer
    x = 18,091.42

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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.