Home / 18,864.28-28,289.94-7,180.84

Finding the Fourth Proportional to 18,864.28, 28,289.94 and 7,180.84

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Solution

The fourth proportional to 18,864.28, 28,289.94 and 7,180.84 is: 10,768.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.28 : 28,289.94 = 7,180.84 : x
  2. Step 2: Convert to fraction form
    18,864.28/28,289.94 = 7,180.84/x
  3. Step 3: Cross multiply
    18,864.28x = 28,289.94 × 7,180.84
  4. Step 4: Simplify right side
    18,864.28x = 203,145,532.75
  5. Step 5: Solve for x
    x = 203,145,532.75/18,864.28
  6. Step 6: Final answer
    x = 10,768.79

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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.