Home / 11,811.56-16,284.75-9,679.28

Finding the Fourth Proportional to 11,811.56, 16,284.75 and 9,679.28

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Solution

The fourth proportional to 11,811.56, 16,284.75 and 9,679.28 is: 13,344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.56 : 16,284.75 = 9,679.28 : x
  2. Step 2: Convert to fraction form
    11,811.56/16,284.75 = 9,679.28/x
  3. Step 3: Cross multiply
    11,811.56x = 16,284.75 × 9,679.28
  4. Step 4: Simplify right side
    11,811.56x = 157,624,654.98
  5. Step 5: Solve for x
    x = 157,624,654.98/11,811.56
  6. Step 6: Final answer
    x = 13,344.95

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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.