Home / 12,749.88-19,141.20-9,830.04

Finding the Fourth Proportional to 12,749.88, 19,141.20 and 9,830.04

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Solution

The fourth proportional to 12,749.88, 19,141.20 and 9,830.04 is: 14,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.88 : 19,141.20 = 9,830.04 : x
  2. Step 2: Convert to fraction form
    12,749.88/19,141.20 = 9,830.04/x
  3. Step 3: Cross multiply
    12,749.88x = 19,141.20 × 9,830.04
  4. Step 4: Simplify right side
    12,749.88x = 188,158,761.65
  5. Step 5: Solve for x
    x = 188,158,761.65/12,749.88
  6. Step 6: Final answer
    x = 14,757.69

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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.