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Finding the Fourth Proportional to 19,713.88, 27,203.52 and 11,213.74

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Solution

The fourth proportional to 19,713.88, 27,203.52 and 11,213.74 is: 15,474.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,713.88 : 27,203.52 = 11,213.74 : x
  2. Step 2: Convert to fraction form
    19,713.88/27,203.52 = 11,213.74/x
  3. Step 3: Cross multiply
    19,713.88x = 27,203.52 × 11,213.74
  4. Step 4: Simplify right side
    19,713.88x = 305,053,200.36
  5. Step 5: Solve for x
    x = 305,053,200.36/19,713.88
  6. Step 6: Final answer
    x = 15,474.03

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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.