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Finding the Fourth Proportional to 18,282.12, 27,424.80 and 14,125.20

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Solution

The fourth proportional to 18,282.12, 27,424.80 and 14,125.20 is: 21,189.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,282.12 : 27,424.80 = 14,125.20 : x
  2. Step 2: Convert to fraction form
    18,282.12/27,424.80 = 14,125.20/x
  3. Step 3: Cross multiply
    18,282.12x = 27,424.80 × 14,125.20
  4. Step 4: Simplify right side
    18,282.12x = 387,380,784.96
  5. Step 5: Solve for x
    x = 387,380,784.96/18,282.12
  6. Step 6: Final answer
    x = 21,189.05

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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.