Home / 19,920.12-29,872.50-8,070.96

Finding the Fourth Proportional to 19,920.12, 29,872.50 and 8,070.96

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Solution

The fourth proportional to 19,920.12, 29,872.50 and 8,070.96 is: 12,103.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.12 : 29,872.50 = 8,070.96 : x
  2. Step 2: Convert to fraction form
    19,920.12/29,872.50 = 8,070.96/x
  3. Step 3: Cross multiply
    19,920.12x = 29,872.50 × 8,070.96
  4. Step 4: Simplify right side
    19,920.12x = 241,099,752.60
  5. Step 5: Solve for x
    x = 241,099,752.60/19,920.12
  6. Step 6: Final answer
    x = 12,103.33

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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.