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Finding the Fourth Proportional to 16,689.98, 23,029.90 and 9,974.20

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Solution

The fourth proportional to 16,689.98, 23,029.90 and 9,974.20 is: 13,763.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,689.98 : 23,029.90 = 9,974.20 : x
  2. Step 2: Convert to fraction form
    16,689.98/23,029.90 = 9,974.20/x
  3. Step 3: Cross multiply
    16,689.98x = 23,029.90 × 9,974.20
  4. Step 4: Simplify right side
    16,689.98x = 229,704,828.58
  5. Step 5: Solve for x
    x = 229,704,828.58/16,689.98
  6. Step 6: Final answer
    x = 13,763.04

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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.