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Finding the Fourth Proportional to 18,115.24, 25,018.50 and 12,464.68

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Solution

The fourth proportional to 18,115.24, 25,018.50 and 12,464.68 is: 17,214.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.24 : 25,018.50 = 12,464.68 : x
  2. Step 2: Convert to fraction form
    18,115.24/25,018.50 = 12,464.68/x
  3. Step 3: Cross multiply
    18,115.24x = 25,018.50 × 12,464.68
  4. Step 4: Simplify right side
    18,115.24x = 311,847,596.58
  5. Step 5: Solve for x
    x = 311,847,596.58/18,115.24
  6. Step 6: Final answer
    x = 17,214.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.