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Finding the Fourth Proportional to 18,843.84, 25,971.84 and 14,119.92

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Solution

The fourth proportional to 18,843.84, 25,971.84 and 14,119.92 is: 19,461.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.84 : 25,971.84 = 14,119.92 : x
  2. Step 2: Convert to fraction form
    18,843.84/25,971.84 = 14,119.92/x
  3. Step 3: Cross multiply
    18,843.84x = 25,971.84 × 14,119.92
  4. Step 4: Simplify right side
    18,843.84x = 366,720,303.05
  5. Step 5: Solve for x
    x = 366,720,303.05/18,843.84
  6. Step 6: Final answer
    x = 19,461.02

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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.