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Finding the Fourth Proportional to 18,339.20, 27,537.60 and 10,563.20

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Solution

The fourth proportional to 18,339.20, 27,537.60 and 10,563.20 is: 15,861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.20 : 27,537.60 = 10,563.20 : x
  2. Step 2: Convert to fraction form
    18,339.20/27,537.60 = 10,563.20/x
  3. Step 3: Cross multiply
    18,339.20x = 27,537.60 × 10,563.20
  4. Step 4: Simplify right side
    18,339.20x = 290,885,176.32
  5. Step 5: Solve for x
    x = 290,885,176.32/18,339.20
  6. Step 6: Final answer
    x = 15,861.39

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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.