Home / 18,421.28-27,635.20-8,571.68

Finding the Fourth Proportional to 18,421.28, 27,635.20 and 8,571.68

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Solution

The fourth proportional to 18,421.28, 27,635.20 and 8,571.68 is: 12,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.28 : 27,635.20 = 8,571.68 : x
  2. Step 2: Convert to fraction form
    18,421.28/27,635.20 = 8,571.68/x
  3. Step 3: Cross multiply
    18,421.28x = 27,635.20 × 8,571.68
  4. Step 4: Simplify right side
    18,421.28x = 236,880,091.14
  5. Step 5: Solve for x
    x = 236,880,091.14/18,421.28
  6. Step 6: Final answer
    x = 12,859.05

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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.