Home / 20,287.08-28,001.70-11,906.28

Finding the Fourth Proportional to 20,287.08, 28,001.70 and 11,906.28

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Solution

The fourth proportional to 20,287.08, 28,001.70 and 11,906.28 is: 16,433.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.08 : 28,001.70 = 11,906.28 : x
  2. Step 2: Convert to fraction form
    20,287.08/28,001.70 = 11,906.28/x
  3. Step 3: Cross multiply
    20,287.08x = 28,001.70 × 11,906.28
  4. Step 4: Simplify right side
    20,287.08x = 333,396,080.68
  5. Step 5: Solve for x
    x = 333,396,080.68/20,287.08
  6. Step 6: Final answer
    x = 16,433.91

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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.