Home / 18,115.96-27,178.20-5,635.36

Finding the Fourth Proportional to 18,115.96, 27,178.20 and 5,635.36

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Solution

The fourth proportional to 18,115.96, 27,178.20 and 5,635.36 is: 8,454.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.96 : 27,178.20 = 5,635.36 : x
  2. Step 2: Convert to fraction form
    18,115.96/27,178.20 = 5,635.36/x
  3. Step 3: Cross multiply
    18,115.96x = 27,178.20 × 5,635.36
  4. Step 4: Simplify right side
    18,115.96x = 153,158,941.15
  5. Step 5: Solve for x
    x = 153,158,941.15/18,115.96
  6. Step 6: Final answer
    x = 8,454.37

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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.