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Finding the Fourth Proportional to 19,893.96, 29,805.89 and 10,513.31

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Solution

The fourth proportional to 19,893.96, 29,805.89 and 10,513.31 is: 15,751.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.96 : 29,805.89 = 10,513.31 : x
  2. Step 2: Convert to fraction form
    19,893.96/29,805.89 = 10,513.31/x
  3. Step 3: Cross multiply
    19,893.96x = 29,805.89 × 10,513.31
  4. Step 4: Simplify right side
    19,893.96x = 313,358,359.80
  5. Step 5: Solve for x
    x = 313,358,359.80/19,893.96
  6. Step 6: Final answer
    x = 15,751.43

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1.5x scale

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.