Home / 19,819.92-29,732.64-7,168.72

Finding the Fourth Proportional to 19,819.92, 29,732.64 and 7,168.72

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Solution

The fourth proportional to 19,819.92, 29,732.64 and 7,168.72 is: 10,754.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.92 : 29,732.64 = 7,168.72 : x
  2. Step 2: Convert to fraction form
    19,819.92/29,732.64 = 7,168.72/x
  3. Step 3: Cross multiply
    19,819.92x = 29,732.64 × 7,168.72
  4. Step 4: Simplify right side
    19,819.92x = 213,144,971.02
  5. Step 5: Solve for x
    x = 213,144,971.02/19,819.92
  6. Step 6: Final answer
    x = 10,754.08

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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.