Home / 20,288.57-27,997.70-11,336.15

Finding the Fourth Proportional to 20,288.57, 27,997.70 and 11,336.15

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Solution

The fourth proportional to 20,288.57, 27,997.70 and 11,336.15 is: 15,643.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.57 : 27,997.70 = 11,336.15 : x
  2. Step 2: Convert to fraction form
    20,288.57/27,997.70 = 11,336.15/x
  3. Step 3: Cross multiply
    20,288.57x = 27,997.70 × 11,336.15
  4. Step 4: Simplify right side
    20,288.57x = 317,385,930.19
  5. Step 5: Solve for x
    x = 317,385,930.19/20,288.57
  6. Step 6: Final answer
    x = 15,643.59

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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.