Home / 13,976.09-19,286.59-7,688.46

Finding the Fourth Proportional to 13,976.09, 19,286.59 and 7,688.46

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Solution

The fourth proportional to 13,976.09, 19,286.59 and 7,688.46 is: 10,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,976.09 : 19,286.59 = 7,688.46 : x
  2. Step 2: Convert to fraction form
    13,976.09/19,286.59 = 7,688.46/x
  3. Step 3: Cross multiply
    13,976.09x = 19,286.59 × 7,688.46
  4. Step 4: Simplify right side
    13,976.09x = 148,284,175.75
  5. Step 5: Solve for x
    x = 148,284,175.75/13,976.09
  6. Step 6: Final answer
    x = 10,609.85

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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.