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Finding the Fourth Proportional to 27,939.94, 41,909.91 and 13,154.74

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Solution

The fourth proportional to 27,939.94, 41,909.91 and 13,154.74 is: 19,732.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,939.94 : 41,909.91 = 13,154.74 : x
  2. Step 2: Convert to fraction form
    27,939.94/41,909.91 = 13,154.74/x
  3. Step 3: Cross multiply
    27,939.94x = 41,909.91 × 13,154.74
  4. Step 4: Simplify right side
    27,939.94x = 551,313,969.47
  5. Step 5: Solve for x
    x = 551,313,969.47/27,939.94
  6. Step 6: Final answer
    x = 19,732.11

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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.