Home / 11,769.04-17,620.60-8,639.20

Finding the Fourth Proportional to 11,769.04, 17,620.60 and 8,639.20

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Solution

The fourth proportional to 11,769.04, 17,620.60 and 8,639.20 is: 12,934.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,769.04 : 17,620.60 = 8,639.20 : x
  2. Step 2: Convert to fraction form
    11,769.04/17,620.60 = 8,639.20/x
  3. Step 3: Cross multiply
    11,769.04x = 17,620.60 × 8,639.20
  4. Step 4: Simplify right side
    11,769.04x = 152,227,887.52
  5. Step 5: Solve for x
    x = 152,227,887.52/11,769.04
  6. Step 6: Final answer
    x = 12,934.61

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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.