Home / 13,975.25-19,286.25-7,688.03

Finding the Fourth Proportional to 13,975.25, 19,286.25 and 7,688.03

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Solution

The fourth proportional to 13,975.25, 19,286.25 and 7,688.03 is: 10,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.25 : 19,286.25 = 7,688.03 : x
  2. Step 2: Convert to fraction form
    13,975.25/19,286.25 = 7,688.03/x
  3. Step 3: Cross multiply
    13,975.25x = 19,286.25 × 7,688.03
  4. Step 4: Simplify right side
    13,975.25x = 148,273,268.59
  5. Step 5: Solve for x
    x = 148,273,268.59/13,975.25
  6. Step 6: Final answer
    x = 10,609.70

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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.