Home / 13,715.45-18,914.07-11,591.03

Finding the Fourth Proportional to 13,715.45, 18,914.07 and 11,591.03

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Solution

The fourth proportional to 13,715.45, 18,914.07 and 11,591.03 is: 15,984.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.45 : 18,914.07 = 11,591.03 : x
  2. Step 2: Convert to fraction form
    13,715.45/18,914.07 = 11,591.03/x
  3. Step 3: Cross multiply
    13,715.45x = 18,914.07 × 11,591.03
  4. Step 4: Simplify right side
    13,715.45x = 219,233,552.79
  5. Step 5: Solve for x
    x = 219,233,552.79/13,715.45
  6. Step 6: Final answer
    x = 15,984.42

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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.