Home / 30,291.28-41,799.86-18,960.28

Finding the Fourth Proportional to 30,291.28, 41,799.86 and 18,960.28

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Solution

The fourth proportional to 30,291.28, 41,799.86 and 18,960.28 is: 26,163.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.28 : 41,799.86 = 18,960.28 : x
  2. Step 2: Convert to fraction form
    30,291.28/41,799.86 = 18,960.28/x
  3. Step 3: Cross multiply
    30,291.28x = 41,799.86 × 18,960.28
  4. Step 4: Simplify right side
    30,291.28x = 792,537,049.56
  5. Step 5: Solve for x
    x = 792,537,049.56/30,291.28
  6. Step 6: Final answer
    x = 26,163.87

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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.