Home / 12,206.08-18,309.20-4,415.20

Finding the Fourth Proportional to 12,206.08, 18,309.20 and 4,415.20

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Solution

The fourth proportional to 12,206.08, 18,309.20 and 4,415.20 is: 6,622.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.08 : 18,309.20 = 4,415.20 : x
  2. Step 2: Convert to fraction form
    12,206.08/18,309.20 = 4,415.20/x
  3. Step 3: Cross multiply
    12,206.08x = 18,309.20 × 4,415.20
  4. Step 4: Simplify right side
    12,206.08x = 80,838,779.84
  5. Step 5: Solve for x
    x = 80,838,779.84/12,206.08
  6. Step 6: Final answer
    x = 6,622.83

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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.