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Finding the Fourth Proportional to 18,274.76, 27,412.16 and 14,120.82

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Solution

The fourth proportional to 18,274.76, 27,412.16 and 14,120.82 is: 21,181.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.76 : 27,412.16 = 14,120.82 : x
  2. Step 2: Convert to fraction form
    18,274.76/27,412.16 = 14,120.82/x
  3. Step 3: Cross multiply
    18,274.76x = 27,412.16 × 14,120.82
  4. Step 4: Simplify right side
    18,274.76x = 387,082,177.17
  5. Step 5: Solve for x
    x = 387,082,177.17/18,274.76
  6. Step 6: Final answer
    x = 21,181.25

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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.