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Finding the Fourth Proportional to 19,791.86, 29,698.72 and 11,031.71

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Solution

The fourth proportional to 19,791.86, 29,698.72 and 11,031.71 is: 16,553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.86 : 29,698.72 = 11,031.71 : x
  2. Step 2: Convert to fraction form
    19,791.86/29,698.72 = 11,031.71/x
  3. Step 3: Cross multiply
    19,791.86x = 29,698.72 × 11,031.71
  4. Step 4: Simplify right side
    19,791.86x = 327,627,490.34
  5. Step 5: Solve for x
    x = 327,627,490.34/19,791.86
  6. Step 6: Final answer
    x = 16,553.65

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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.