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Finding the Fourth Proportional to 19,760.63, 29,640.94 and 8,073.85

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Solution

The fourth proportional to 19,760.63, 29,640.94 and 8,073.85 is: 12,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.63 : 29,640.94 = 8,073.85 : x
  2. Step 2: Convert to fraction form
    19,760.63/29,640.94 = 8,073.85/x
  3. Step 3: Cross multiply
    19,760.63x = 29,640.94 × 8,073.85
  4. Step 4: Simplify right side
    19,760.63x = 239,316,503.42
  5. Step 5: Solve for x
    x = 239,316,503.42/19,760.63
  6. Step 6: Final answer
    x = 12,110.77

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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.