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Finding the Fourth Proportional to 18,378.64, 27,548.52 and 9,021.52

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Solution

The fourth proportional to 18,378.64, 27,548.52 and 9,021.52 is: 13,522.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.64 : 27,548.52 = 9,021.52 : x
  2. Step 2: Convert to fraction form
    18,378.64/27,548.52 = 9,021.52/x
  3. Step 3: Cross multiply
    18,378.64x = 27,548.52 × 9,021.52
  4. Step 4: Simplify right side
    18,378.64x = 248,529,524.15
  5. Step 5: Solve for x
    x = 248,529,524.15/18,378.64
  6. Step 6: Final answer
    x = 13,522.74

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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.