Home / 20,283.01-27,990.16-11,208.85

Finding the Fourth Proportional to 20,283.01, 27,990.16 and 11,208.85

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Solution

The fourth proportional to 20,283.01, 27,990.16 and 11,208.85 is: 15,467.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.01 : 27,990.16 = 11,208.85 : x
  2. Step 2: Convert to fraction form
    20,283.01/27,990.16 = 11,208.85/x
  3. Step 3: Cross multiply
    20,283.01x = 27,990.16 × 11,208.85
  4. Step 4: Simplify right side
    20,283.01x = 313,737,406.92
  5. Step 5: Solve for x
    x = 313,737,406.92/20,283.01
  6. Step 6: Final answer
    x = 15,467.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.