Home / 12,213.05-16,850.96-7,109.40

Finding the Fourth Proportional to 12,213.05, 16,850.96 and 7,109.40

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Solution

The fourth proportional to 12,213.05, 16,850.96 and 7,109.40 is: 9,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.05 : 16,850.96 = 7,109.40 : x
  2. Step 2: Convert to fraction form
    12,213.05/16,850.96 = 7,109.40/x
  3. Step 3: Cross multiply
    12,213.05x = 16,850.96 × 7,109.40
  4. Step 4: Simplify right side
    12,213.05x = 119,800,179.48
  5. Step 5: Solve for x
    x = 119,800,179.48/12,213.05
  6. Step 6: Final answer
    x = 9,809.20

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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.