Home / 13,278.22-18,323.81-7,309.73

Finding the Fourth Proportional to 13,278.22, 18,323.81 and 7,309.73

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Solution

The fourth proportional to 13,278.22, 18,323.81 and 7,309.73 is: 10,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.22 : 18,323.81 = 7,309.73 : x
  2. Step 2: Convert to fraction form
    13,278.22/18,323.81 = 7,309.73/x
  3. Step 3: Cross multiply
    13,278.22x = 18,323.81 × 7,309.73
  4. Step 4: Simplify right side
    13,278.22x = 133,942,103.67
  5. Step 5: Solve for x
    x = 133,942,103.67/13,278.22
  6. Step 6: Final answer
    x = 10,087.35

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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.