Home / 18,143.72-27,230.16-9,381.20

Finding the Fourth Proportional to 18,143.72, 27,230.16 and 9,381.20

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Solution

The fourth proportional to 18,143.72, 27,230.16 and 9,381.20 is: 14,079.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.72 : 27,230.16 = 9,381.20 : x
  2. Step 2: Convert to fraction form
    18,143.72/27,230.16 = 9,381.20/x
  3. Step 3: Cross multiply
    18,143.72x = 27,230.16 × 9,381.20
  4. Step 4: Simplify right side
    18,143.72x = 255,451,576.99
  5. Step 5: Solve for x
    x = 255,451,576.99/18,143.72
  6. Step 6: Final answer
    x = 14,079.34

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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.