Home / 19,930.91-29,859.90-9,409.62

Finding the Fourth Proportional to 19,930.91, 29,859.90 and 9,409.62

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Solution

The fourth proportional to 19,930.91, 29,859.90 and 9,409.62 is: 14,097.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.91 : 29,859.90 = 9,409.62 : x
  2. Step 2: Convert to fraction form
    19,930.91/29,859.90 = 9,409.62/x
  3. Step 3: Cross multiply
    19,930.91x = 29,859.90 × 9,409.62
  4. Step 4: Simplify right side
    19,930.91x = 280,970,312.24
  5. Step 5: Solve for x
    x = 280,970,312.24/19,930.91
  6. Step 6: Final answer
    x = 14,097.21

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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.