Home / 13,221.04-18,245.87-8,736.92

Finding the Fourth Proportional to 13,221.04, 18,245.87 and 8,736.92

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Solution

The fourth proportional to 13,221.04, 18,245.87 and 8,736.92 is: 12,057.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.04 : 18,245.87 = 8,736.92 : x
  2. Step 2: Convert to fraction form
    13,221.04/18,245.87 = 8,736.92/x
  3. Step 3: Cross multiply
    13,221.04x = 18,245.87 × 8,736.92
  4. Step 4: Simplify right side
    13,221.04x = 159,412,662.84
  5. Step 5: Solve for x
    x = 159,412,662.84/13,221.04
  6. Step 6: Final answer
    x = 12,057.50

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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.