Home / 13,208.28-18,231.66-8,734.92

Finding the Fourth Proportional to 13,208.28, 18,231.66 and 8,734.92

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Solution

The fourth proportional to 13,208.28, 18,231.66 and 8,734.92 is: 12,056.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.28 : 18,231.66 = 8,734.92 : x
  2. Step 2: Convert to fraction form
    13,208.28/18,231.66 = 8,734.92/x
  3. Step 3: Cross multiply
    13,208.28x = 18,231.66 × 8,734.92
  4. Step 4: Simplify right side
    13,208.28x = 159,252,091.57
  5. Step 5: Solve for x
    x = 159,252,091.57/13,208.28
  6. Step 6: Final answer
    x = 12,056.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.