Home / 20,162.72-27,824.64-11,211.04

Finding the Fourth Proportional to 20,162.72, 27,824.64 and 11,211.04

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Solution

The fourth proportional to 20,162.72, 27,824.64 and 11,211.04 is: 15,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.72 : 27,824.64 = 11,211.04 : x
  2. Step 2: Convert to fraction form
    20,162.72/27,824.64 = 11,211.04/x
  3. Step 3: Cross multiply
    20,162.72x = 27,824.64 × 11,211.04
  4. Step 4: Simplify right side
    20,162.72x = 311,943,152.03
  5. Step 5: Solve for x
    x = 311,943,152.03/20,162.72
  6. Step 6: Final answer
    x = 15,471.28

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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.