Home / 13,694.08-18,896.88-7,724.64

Finding the Fourth Proportional to 13,694.08, 18,896.88 and 7,724.64

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Solution

The fourth proportional to 13,694.08, 18,896.88 and 7,724.64 is: 10,659.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.08 : 18,896.88 = 7,724.64 : x
  2. Step 2: Convert to fraction form
    13,694.08/18,896.88 = 7,724.64/x
  3. Step 3: Cross multiply
    13,694.08x = 18,896.88 × 7,724.64
  4. Step 4: Simplify right side
    13,694.08x = 145,971,595.12
  5. Step 5: Solve for x
    x = 145,971,595.12/13,694.08
  6. Step 6: Final answer
    x = 10,659.47

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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.