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Finding the Fourth Proportional to 16,687.80, 23,028.81 and 9,133.95

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Solution

The fourth proportional to 16,687.80, 23,028.81 and 9,133.95 is: 12,604.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,687.80 : 23,028.81 = 9,133.95 : x
  2. Step 2: Convert to fraction form
    16,687.80/23,028.81 = 9,133.95/x
  3. Step 3: Cross multiply
    16,687.80x = 23,028.81 × 9,133.95
  4. Step 4: Simplify right side
    16,687.80x = 210,343,999.10
  5. Step 5: Solve for x
    x = 210,343,999.10/16,687.80
  6. Step 6: Final answer
    x = 12,604.66

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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.