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Finding the Fourth Proportional to 16,687.90, 23,029.89 and 9,134.08

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Solution

The fourth proportional to 16,687.90, 23,029.89 and 9,134.08 is: 12,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,687.90 : 23,029.89 = 9,134.08 : x
  2. Step 2: Convert to fraction form
    16,687.90/23,029.89 = 9,134.08/x
  3. Step 3: Cross multiply
    16,687.90x = 23,029.89 × 9,134.08
  4. Step 4: Simplify right side
    16,687.90x = 210,356,857.65
  5. Step 5: Solve for x
    x = 210,356,857.65/16,687.90
  6. Step 6: Final answer
    x = 12,605.35

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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.