Home / 13,716.62-18,928.86-7,428.95

Finding the Fourth Proportional to 13,716.62, 18,928.86 and 7,428.95

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Solution

The fourth proportional to 13,716.62, 18,928.86 and 7,428.95 is: 10,251.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.62 : 18,928.86 = 7,428.95 : x
  2. Step 2: Convert to fraction form
    13,716.62/18,928.86 = 7,428.95/x
  3. Step 3: Cross multiply
    13,716.62x = 18,928.86 × 7,428.95
  4. Step 4: Simplify right side
    13,716.62x = 140,621,554.50
  5. Step 5: Solve for x
    x = 140,621,554.50/13,716.62
  6. Step 6: Final answer
    x = 10,251.91

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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.