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Finding the Fourth Proportional to 18,645.21, 27,935.01 and 17,535.32

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Solution

The fourth proportional to 18,645.21, 27,935.01 and 17,535.32 is: 26,272.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.21 : 27,935.01 = 17,535.32 : x
  2. Step 2: Convert to fraction form
    18,645.21/27,935.01 = 17,535.32/x
  3. Step 3: Cross multiply
    18,645.21x = 27,935.01 × 17,535.32
  4. Step 4: Simplify right side
    18,645.21x = 489,849,199.88
  5. Step 5: Solve for x
    x = 489,849,199.88/18,645.21
  6. Step 6: Final answer
    x = 26,272.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.