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Finding the Fourth Proportional to 18,469.84, 27,804.61 and 16,862.80

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Solution

The fourth proportional to 18,469.84, 27,804.61 and 16,862.80 is: 25,385.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.84 : 27,804.61 = 16,862.80 : x
  2. Step 2: Convert to fraction form
    18,469.84/27,804.61 = 16,862.80/x
  3. Step 3: Cross multiply
    18,469.84x = 27,804.61 × 16,862.80
  4. Step 4: Simplify right side
    18,469.84x = 468,863,577.51
  5. Step 5: Solve for x
    x = 468,863,577.51/18,469.84
  6. Step 6: Final answer
    x = 25,385.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.