Home / 18,960.18-28,419.09-7,102.56

Finding the Fourth Proportional to 18,960.18, 28,419.09 and 7,102.56

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Solution

The fourth proportional to 18,960.18, 28,419.09 and 7,102.56 is: 10,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.18 : 28,419.09 = 7,102.56 : x
  2. Step 2: Convert to fraction form
    18,960.18/28,419.09 = 7,102.56/x
  3. Step 3: Cross multiply
    18,960.18x = 28,419.09 × 7,102.56
  4. Step 4: Simplify right side
    18,960.18x = 201,848,291.87
  5. Step 5: Solve for x
    x = 201,848,291.87/18,960.18
  6. Step 6: Final answer
    x = 10,645.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.