Home / 13,200.30-19,800.45-8,206.65

Finding the Fourth Proportional to 13,200.30, 19,800.45 and 8,206.65

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Solution

The fourth proportional to 13,200.30, 19,800.45 and 8,206.65 is: 12,309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.30 : 19,800.45 = 8,206.65 : x
  2. Step 2: Convert to fraction form
    13,200.30/19,800.45 = 8,206.65/x
  3. Step 3: Cross multiply
    13,200.30x = 19,800.45 × 8,206.65
  4. Step 4: Simplify right side
    13,200.30x = 162,495,362.99
  5. Step 5: Solve for x
    x = 162,495,362.99/13,200.30
  6. Step 6: Final answer
    x = 12,309.98

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Similar ratio
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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.