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Finding the Fourth Proportional to 19,907.39, 27,463.01 and 12,836.09

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Solution

The fourth proportional to 19,907.39, 27,463.01 and 12,836.09 is: 17,707.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,907.39 : 27,463.01 = 12,836.09 : x
  2. Step 2: Convert to fraction form
    19,907.39/27,463.01 = 12,836.09/x
  3. Step 3: Cross multiply
    19,907.39x = 27,463.01 × 12,836.09
  4. Step 4: Simplify right side
    19,907.39x = 352,517,672.51
  5. Step 5: Solve for x
    x = 352,517,672.51/19,907.39
  6. Step 6: Final answer
    x = 17,707.88

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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.