Home / 13,212.64-18,227.28-7,906.96

Finding the Fourth Proportional to 13,212.64, 18,227.28 and 7,906.96

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Solution

The fourth proportional to 13,212.64, 18,227.28 and 7,906.96 is: 10,907.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.64 : 18,227.28 = 7,906.96 : x
  2. Step 2: Convert to fraction form
    13,212.64/18,227.28 = 7,906.96/x
  3. Step 3: Cross multiply
    13,212.64x = 18,227.28 × 7,906.96
  4. Step 4: Simplify right side
    13,212.64x = 144,122,373.87
  5. Step 5: Solve for x
    x = 144,122,373.87/13,212.64
  6. Step 6: Final answer
    x = 10,907.92

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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.