Home / 13,313.73-18,371.63-7,861.95

Finding the Fourth Proportional to 13,313.73, 18,371.63 and 7,861.95

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Solution

The fourth proportional to 13,313.73, 18,371.63 and 7,861.95 is: 10,848.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.73 : 18,371.63 = 7,861.95 : x
  2. Step 2: Convert to fraction form
    13,313.73/18,371.63 = 7,861.95/x
  3. Step 3: Cross multiply
    13,313.73x = 18,371.63 × 7,861.95
  4. Step 4: Simplify right side
    13,313.73x = 144,436,797.17
  5. Step 5: Solve for x
    x = 144,436,797.17/13,313.73
  6. Step 6: Final answer
    x = 10,848.71

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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.