Home / 18,911.80-28,380.46-14,235.27

Finding the Fourth Proportional to 18,911.80, 28,380.46 and 14,235.27

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Solution

The fourth proportional to 18,911.80, 28,380.46 and 14,235.27 is: 21,362.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.80 : 28,380.46 = 14,235.27 : x
  2. Step 2: Convert to fraction form
    18,911.80/28,380.46 = 14,235.27/x
  3. Step 3: Cross multiply
    18,911.80x = 28,380.46 × 14,235.27
  4. Step 4: Simplify right side
    18,911.80x = 404,003,510.82
  5. Step 5: Solve for x
    x = 404,003,510.82/18,911.80
  6. Step 6: Final answer
    x = 21,362.51

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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.