Home / 12,200.20-18,300.30-11,216.05

Finding the Fourth Proportional to 12,200.20, 18,300.30 and 11,216.05

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Solution

The fourth proportional to 12,200.20, 18,300.30 and 11,216.05 is: 16,824.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.20 : 18,300.30 = 11,216.05 : x
  2. Step 2: Convert to fraction form
    12,200.20/18,300.30 = 11,216.05/x
  3. Step 3: Cross multiply
    12,200.20x = 18,300.30 × 11,216.05
  4. Step 4: Simplify right side
    12,200.20x = 205,257,079.82
  5. Step 5: Solve for x
    x = 205,257,079.82/12,200.20
  6. Step 6: Final answer
    x = 16,824.08

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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.