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Finding the Fourth Proportional to 27,879.84, 38,491.02 and 18,334.80

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Solution

The fourth proportional to 27,879.84, 38,491.02 and 18,334.80 is: 25,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.84 : 38,491.02 = 18,334.80 : x
  2. Step 2: Convert to fraction form
    27,879.84/38,491.02 = 18,334.80/x
  3. Step 3: Cross multiply
    27,879.84x = 38,491.02 × 18,334.80
  4. Step 4: Simplify right side
    27,879.84x = 705,725,153.50
  5. Step 5: Solve for x
    x = 705,725,153.50/27,879.84
  6. Step 6: Final answer
    x = 25,313.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.