Home / 19,721.92-27,213.60-11,338.96

Finding the Fourth Proportional to 19,721.92, 27,213.60 and 11,338.96

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Solution

The fourth proportional to 19,721.92, 27,213.60 and 11,338.96 is: 15,646.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.92 : 27,213.60 = 11,338.96 : x
  2. Step 2: Convert to fraction form
    19,721.92/27,213.60 = 11,338.96/x
  3. Step 3: Cross multiply
    19,721.92x = 27,213.60 × 11,338.96
  4. Step 4: Simplify right side
    19,721.92x = 308,573,921.86
  5. Step 5: Solve for x
    x = 308,573,921.86/19,721.92
  6. Step 6: Final answer
    x = 15,646.24

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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.