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Finding the Fourth Proportional to 27,279.29, 40,910.72 and 17,918.93

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Solution

The fourth proportional to 27,279.29, 40,910.72 and 17,918.93 is: 26,872.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279.29 : 40,910.72 = 17,918.93 : x
  2. Step 2: Convert to fraction form
    27,279.29/40,910.72 = 17,918.93/x
  3. Step 3: Cross multiply
    27,279.29x = 40,910.72 × 17,918.93
  4. Step 4: Simplify right side
    27,279.29x = 733,076,033.78
  5. Step 5: Solve for x
    x = 733,076,033.78/27,279.29
  6. Step 6: Final answer
    x = 26,872.99

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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.