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Finding the Fourth Proportional to 18,193.20, 27,289.80 and 12,037.20

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Solution

The fourth proportional to 18,193.20, 27,289.80 and 12,037.20 is: 18,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,193.20 : 27,289.80 = 12,037.20 : x
  2. Step 2: Convert to fraction form
    18,193.20/27,289.80 = 12,037.20/x
  3. Step 3: Cross multiply
    18,193.20x = 27,289.80 × 12,037.20
  4. Step 4: Simplify right side
    18,193.20x = 328,492,780.56
  5. Step 5: Solve for x
    x = 328,492,780.56/18,193.20
  6. Step 6: Final answer
    x = 18,055.80

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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.