Home / 18,120.22-27,178.89-6,431.92

Finding the Fourth Proportional to 18,120.22, 27,178.89 and 6,431.92

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Solution

The fourth proportional to 18,120.22, 27,178.89 and 6,431.92 is: 9,647.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.22 : 27,178.89 = 6,431.92 : x
  2. Step 2: Convert to fraction form
    18,120.22/27,178.89 = 6,431.92/x
  3. Step 3: Cross multiply
    18,120.22x = 27,178.89 × 6,431.92
  4. Step 4: Simplify right side
    18,120.22x = 174,812,446.17
  5. Step 5: Solve for x
    x = 174,812,446.17/18,120.22
  6. Step 6: Final answer
    x = 9,647.37

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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.