Home / 18,965.97-28,432.53-10,190.61

Finding the Fourth Proportional to 18,965.97, 28,432.53 and 10,190.61

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Solution

The fourth proportional to 18,965.97, 28,432.53 and 10,190.61 is: 15,277.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.97 : 28,432.53 = 10,190.61 : x
  2. Step 2: Convert to fraction form
    18,965.97/28,432.53 = 10,190.61/x
  3. Step 3: Cross multiply
    18,965.97x = 28,432.53 × 10,190.61
  4. Step 4: Simplify right side
    18,965.97x = 289,744,824.54
  5. Step 5: Solve for x
    x = 289,744,824.54/18,965.97
  6. Step 6: Final answer
    x = 15,277.09

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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.