Home / 19,658.64-29,519.96-12,408.72

Finding the Fourth Proportional to 19,658.64, 29,519.96 and 12,408.72

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Solution

The fourth proportional to 19,658.64, 29,519.96 and 12,408.72 is: 18,633.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.64 : 29,519.96 = 12,408.72 : x
  2. Step 2: Convert to fraction form
    19,658.64/29,519.96 = 12,408.72/x
  3. Step 3: Cross multiply
    19,658.64x = 29,519.96 × 12,408.72
  4. Step 4: Simplify right side
    19,658.64x = 366,304,918.05
  5. Step 5: Solve for x
    x = 366,304,918.05/19,658.64
  6. Step 6: Final answer
    x = 18,633.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.