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Finding the Fourth Proportional to 19,960.68, 29,940.84 and 7,648.68

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Solution

The fourth proportional to 19,960.68, 29,940.84 and 7,648.68 is: 11,472.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960.68 : 29,940.84 = 7,648.68 : x
  2. Step 2: Convert to fraction form
    19,960.68/29,940.84 = 7,648.68/x
  3. Step 3: Cross multiply
    19,960.68x = 29,940.84 × 7,648.68
  4. Step 4: Simplify right side
    19,960.68x = 229,007,904.09
  5. Step 5: Solve for x
    x = 229,007,904.09/19,960.68
  6. Step 6: Final answer
    x = 11,472.95

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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.