Home / 18,923.56-28,400.46-11,138.92

Finding the Fourth Proportional to 18,923.56, 28,400.46 and 11,138.92

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Solution

The fourth proportional to 18,923.56, 28,400.46 and 11,138.92 is: 16,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.56 : 28,400.46 = 11,138.92 : x
  2. Step 2: Convert to fraction form
    18,923.56/28,400.46 = 11,138.92/x
  3. Step 3: Cross multiply
    18,923.56x = 28,400.46 × 11,138.92
  4. Step 4: Simplify right side
    18,923.56x = 316,350,451.90
  5. Step 5: Solve for x
    x = 316,350,451.90/18,923.56
  6. Step 6: Final answer
    x = 16,717.28

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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.