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Finding the Fourth Proportional to 36,319.94, 54,479.90 and 12,929.97

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Solution

The fourth proportional to 36,319.94, 54,479.90 and 12,929.97 is: 19,394.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,319.94 : 54,479.90 = 12,929.97 : x
  2. Step 2: Convert to fraction form
    36,319.94/54,479.90 = 12,929.97/x
  3. Step 3: Cross multiply
    36,319.94x = 54,479.90 × 12,929.97
  4. Step 4: Simplify right side
    36,319.94x = 704,423,504.93
  5. Step 5: Solve for x
    x = 704,423,504.93/36,319.94
  6. Step 6: Final answer
    x = 19,394.96

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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.