Home / 13,311.79-18,313.66-12,942.73

Finding the Fourth Proportional to 13,311.79, 18,313.66 and 12,942.73

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Solution

The fourth proportional to 13,311.79, 18,313.66 and 12,942.73 is: 17,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.79 : 18,313.66 = 12,942.73 : x
  2. Step 2: Convert to fraction form
    13,311.79/18,313.66 = 12,942.73/x
  3. Step 3: Cross multiply
    13,311.79x = 18,313.66 × 12,942.73
  4. Step 4: Simplify right side
    13,311.79x = 237,028,795.76
  5. Step 5: Solve for x
    x = 237,028,795.76/13,311.79
  6. Step 6: Final answer
    x = 17,805.93

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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.