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Finding the Fourth Proportional to 12,267.92, 18,384.30 and 6,991.99

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Solution

The fourth proportional to 12,267.92, 18,384.30 and 6,991.99 is: 10,477.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,267.92 : 18,384.30 = 6,991.99 : x
  2. Step 2: Convert to fraction form
    12,267.92/18,384.30 = 6,991.99/x
  3. Step 3: Cross multiply
    12,267.92x = 18,384.30 × 6,991.99
  4. Step 4: Simplify right side
    12,267.92x = 128,542,795.80
  5. Step 5: Solve for x
    x = 128,542,795.80/12,267.92
  6. Step 6: Final answer
    x = 10,477.96

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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.