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Finding the Fourth Proportional to 19,657.82, 27,128.32 and 11,160.32

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Solution

The fourth proportional to 19,657.82, 27,128.32 and 11,160.32 is: 15,401.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.82 : 27,128.32 = 11,160.32 : x
  2. Step 2: Convert to fraction form
    19,657.82/27,128.32 = 11,160.32/x
  3. Step 3: Cross multiply
    19,657.82x = 27,128.32 × 11,160.32
  4. Step 4: Simplify right side
    19,657.82x = 302,760,568.72
  5. Step 5: Solve for x
    x = 302,760,568.72/19,657.82
  6. Step 6: Final answer
    x = 15,401.53

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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.