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Finding the Fourth Proportional to 19,960.29, 29,946.51 and 8,865.99

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Solution

The fourth proportional to 19,960.29, 29,946.51 and 8,865.99 is: 13,301.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960.29 : 29,946.51 = 8,865.99 : x
  2. Step 2: Convert to fraction form
    19,960.29/29,946.51 = 8,865.99/x
  3. Step 3: Cross multiply
    19,960.29x = 29,946.51 × 8,865.99
  4. Step 4: Simplify right side
    19,960.29x = 265,505,458.19
  5. Step 5: Solve for x
    x = 265,505,458.19/19,960.29
  6. Step 6: Final answer
    x = 13,301.68

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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.