Home / 18,153.72-27,219.24-8,790.12

Finding the Fourth Proportional to 18,153.72, 27,219.24 and 8,790.12

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Solution

The fourth proportional to 18,153.72, 27,219.24 and 8,790.12 is: 13,179.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153.72 : 27,219.24 = 8,790.12 : x
  2. Step 2: Convert to fraction form
    18,153.72/27,219.24 = 8,790.12/x
  3. Step 3: Cross multiply
    18,153.72x = 27,219.24 × 8,790.12
  4. Step 4: Simplify right side
    18,153.72x = 239,260,385.91
  5. Step 5: Solve for x
    x = 239,260,385.91/18,153.72
  6. Step 6: Final answer
    x = 13,179.69

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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.