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Finding the Fourth Proportional to 19,960.47, 29,932.47 and 6,813.90

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Solution

The fourth proportional to 19,960.47, 29,932.47 and 6,813.90 is: 10,218.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960.47 : 29,932.47 = 6,813.90 : x
  2. Step 2: Convert to fraction form
    19,960.47/29,932.47 = 6,813.90/x
  3. Step 3: Cross multiply
    19,960.47x = 29,932.47 × 6,813.90
  4. Step 4: Simplify right side
    19,960.47x = 203,956,857.33
  5. Step 5: Solve for x
    x = 203,956,857.33/19,960.47
  6. Step 6: Final answer
    x = 10,218.04

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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.