Home / 18,960.87-28,448.70-7,864.75

Finding the Fourth Proportional to 18,960.87, 28,448.70 and 7,864.75

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Solution

The fourth proportional to 18,960.87, 28,448.70 and 7,864.75 is: 11,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.87 : 28,448.70 = 7,864.75 : x
  2. Step 2: Convert to fraction form
    18,960.87/28,448.70 = 7,864.75/x
  3. Step 3: Cross multiply
    18,960.87x = 28,448.70 × 7,864.75
  4. Step 4: Simplify right side
    18,960.87x = 223,741,913.33
  5. Step 5: Solve for x
    x = 223,741,913.33/18,960.87
  6. Step 6: Final answer
    x = 11,800.19

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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.