Home / 13,112.20-18,053.04-12,217.96

Finding the Fourth Proportional to 13,112.20, 18,053.04 and 12,217.96

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Solution

The fourth proportional to 13,112.20, 18,053.04 and 12,217.96 is: 16,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.20 : 18,053.04 = 12,217.96 : x
  2. Step 2: Convert to fraction form
    13,112.20/18,053.04 = 12,217.96/x
  3. Step 3: Cross multiply
    13,112.20x = 18,053.04 × 12,217.96
  4. Step 4: Simplify right side
    13,112.20x = 220,571,320.60
  5. Step 5: Solve for x
    x = 220,571,320.60/13,112.20
  6. Step 6: Final answer
    x = 16,821.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.