Home / 19,518-29,278.26-7,829.70

Finding the Fourth Proportional to 19,518, 29,278.26 and 7,829.70

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Solution

The fourth proportional to 19,518, 29,278.26 and 7,829.70 is: 11,745.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518 : 29,278.26 = 7,829.70 : x
  2. Step 2: Convert to fraction form
    19,518/29,278.26 = 7,829.70/x
  3. Step 3: Cross multiply
    19,518x = 29,278.26 × 7,829.70
  4. Step 4: Simplify right side
    19,518x = 229,239,992.32
  5. Step 5: Solve for x
    x = 229,239,992.32/19,518
  6. Step 6: Final answer
    x = 11,745.06

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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.