Home / 18,500.79-27,758.48-8,105.25

Finding the Fourth Proportional to 18,500.79, 27,758.48 and 8,105.25

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Solution

The fourth proportional to 18,500.79, 27,758.48 and 8,105.25 is: 12,161.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.79 : 27,758.48 = 8,105.25 : x
  2. Step 2: Convert to fraction form
    18,500.79/27,758.48 = 8,105.25/x
  3. Step 3: Cross multiply
    18,500.79x = 27,758.48 × 8,105.25
  4. Step 4: Simplify right side
    18,500.79x = 224,989,440.28
  5. Step 5: Solve for x
    x = 224,989,440.28/18,500.79
  6. Step 6: Final answer
    x = 12,161.07

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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.