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Finding the Fourth Proportional to 18,525.80, 27,793.02 and 5,378.42

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Solution

The fourth proportional to 18,525.80, 27,793.02 and 5,378.42 is: 8,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,525.80 : 27,793.02 = 5,378.42 : x
  2. Step 2: Convert to fraction form
    18,525.80/27,793.02 = 5,378.42/x
  3. Step 3: Cross multiply
    18,525.80x = 27,793.02 × 5,378.42
  4. Step 4: Simplify right side
    18,525.80x = 149,482,534.63
  5. Step 5: Solve for x
    x = 149,482,534.63/18,525.80
  6. Step 6: Final answer
    x = 8,068.88

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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.