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Finding the Fourth Proportional to 16,679.70, 23,015.71 and 9,963.90

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Solution

The fourth proportional to 16,679.70, 23,015.71 and 9,963.90 is: 13,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,679.70 : 23,015.71 = 9,963.90 : x
  2. Step 2: Convert to fraction form
    16,679.70/23,015.71 = 9,963.90/x
  3. Step 3: Cross multiply
    16,679.70x = 23,015.71 × 9,963.90
  4. Step 4: Simplify right side
    16,679.70x = 229,326,121.65
  5. Step 5: Solve for x
    x = 229,326,121.65/16,679.70
  6. Step 6: Final answer
    x = 13,748.82

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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.