Home / 13,212.12-18,233.30-7,905.92

Finding the Fourth Proportional to 13,212.12, 18,233.30 and 7,905.92

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Solution

The fourth proportional to 13,212.12, 18,233.30 and 7,905.92 is: 10,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.12 : 18,233.30 = 7,905.92 : x
  2. Step 2: Convert to fraction form
    13,212.12/18,233.30 = 7,905.92/x
  3. Step 3: Cross multiply
    13,212.12x = 18,233.30 × 7,905.92
  4. Step 4: Simplify right side
    13,212.12x = 144,150,880.44
  5. Step 5: Solve for x
    x = 144,150,880.44/13,212.12
  6. Step 6: Final answer
    x = 10,910.50

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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.