Home / 20,288.08-27,998.28-11,907.28

Finding the Fourth Proportional to 20,288.08, 27,998.28 and 11,907.28

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Solution

The fourth proportional to 20,288.08, 27,998.28 and 11,907.28 is: 16,432.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.08 : 27,998.28 = 11,907.28 : x
  2. Step 2: Convert to fraction form
    20,288.08/27,998.28 = 11,907.28/x
  3. Step 3: Cross multiply
    20,288.08x = 27,998.28 × 11,907.28
  4. Step 4: Simplify right side
    20,288.08x = 333,383,359.48
  5. Step 5: Solve for x
    x = 333,383,359.48/20,288.08
  6. Step 6: Final answer
    x = 16,432.47

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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.